Abrasion: Tiny nicks along facet junctions, producing white fuzzy lines instead of sharp crisp facet edges.
Adularescence: An internal "floating" movement of light across a gemstone that varies as light strikes the exterior of the gem, i.e. moonstone.
Agate: A form of chalcedony often used for cameo carving.
AGSL: The American Gem Society Laboratories is a well-respected organization specializing in diamond grading.
AGSL Diamond Quality Document: An evaluation report produced by the American Gem Society Laboratories to detail specific diamond traits such as shape, cut, clarity, measurement, carat weight, etc.
Akoya Pearl: A variety of Japanese cultured pearl, grown in cold saltwater. The most famous akoya pearls are those produced by Mikimoto.
Alexandrite: A color change variety of the gemstone chrysoberyl. Often appears greenish in daylight and reddish under incandescent light.
Alloy: The mixture of two or more metals.
Amber: Fossilized tree resin or sap, occuring in a wide range of colors.
Amethyst: The purple variety of quartz. Amethyst is the birthstone for February.
Anodized: Using a decorative oxide to coat or stain a metallic surface.
Appraisal: An evaluation of an item detailing gemstones, metal and element content with an affixed price attached. The most notable form is for insurance or retail replacement purposes. Aquamarine: The pale blue to greenish-blue form of beryl. Aquamarine is the birthstone for March.
Articulated: Having flexibility through the implementation of hinges or jump rings.
Asscher-cut Diamond: A diamond cut belonging to the step-cut family. Originally, Asscher-cuts had a well-defined stop sign shape. Modern Asscher-cuts are more easily recognized as square-shaped emerald-cuts with cut corners.
Asterism: A star form achieved through the combination of internal gemstone characteristics (needle configuration) and a cabochon cut. An example of asterism is a star sapphire. Authorized Watch: A watch sold by an authorized watch dealer after coming directly from the manufacturer. Purchasing an authorized watch ensures that it is new, original, and covered by a manufacturer's warranty.
Automatic Movement: A high quality watch movement that is self-winding.
Baguette: A stone cut with a long rectangular table and a stepped facet pattern.
Bangle: A non-flexible bracelet that either slips over the hand or features a hinge that allows the bangle to be placed around the wrist.
Bar Channel Setting: Bar channel setting has a smooth surface featuring short bars with open sides. Carefully placed grooves securely hold the gemstones in place.
Baroque Pearl: The term baroque refers to a shape rather than a pearl type. A pearl is labeled baroque if it is a shape other than round.
Bead Chain: A bead chain consists of a series of interconnected ball or bead links.
Bead Setting: Bead setting is a term used to describe tiny beads or balls of metal that are pushed over the edge of the diamond to secure it in a mounting.
Beaded Edge: A beaded edge, otherwise known as “millegraining” is an elegant finishing touch formed by a series of small beads or ridges of metal.
Bearded Girdle: The girdle is the widest edge of a diamond. Bearding occurs when fine white lines flow over the girdle's edge onto neighboring facets. This is the result of over-polishing.
Beryl: A mineral that occurs in a wide range of colors, most often recognized in its blue form as Aquamarine, or in its green form, Emerald.
Bezel Setting: A metal strip or rim that encircles a gemstone's outer edge; securing it to a jewelry item.
Black Diamond: When a diamond is dark gray to black, it is referred to in the trade as a "black diamond." Such a stone may be opaque to nearly semi- transparent.
Blemish: A flaw found on the surface of a gemstone.
Body Color: The dominant color of a pearl, typically white, black, cream, gold or silver.
Bow-Tie: A darkened area or shadow resembling a bow-tie that is often found in fancy-shape diamond cuts, such as marquise, pears and oval. The bow-tie is a direct sign of how well-cut the diamond is, lesser noticeable indicates a gem well cut, more noticeable, a poorer cut.
Box Chain: A box chain is formed by a series of interconnected square links; sometimes referred to as a Venetian box.
Box Clasp with Figure-8 Safety: A box clasp with an added safety feature in the form of the number 8. The safety is generally attached to the side of an item and locks around a metal ball.
Bracelet Clasp: A clasp is an attachment that connects either end of a bracelet.
Brilliance: Brilliance or sparkle is the effect of light bouncing off of a gemstone's surface and striking the eye. Brilliance is the direct result of how well-cut a gemstone is.
Brilliant Cut: The most common cutting style for both diamonds and colored stones is brilliant cut. The standard round brilliant consists of a total of 58 facets: 1 table, 8 bezel facets, 8 star facets, and 16 upper-girdle facets on the crown; and 8 pavilion facets, 16 lower-girdle facets, and usually a culet on the pavilion, or base.
Briolette: A cutting style utilized on transparent gemstones, wherein a teardrop-shaped form with a pointed apex and a rounded bottom is crafted.
Bruise: A minor surface flaw or crumbling that is characterized by tiny root-like feathers.
Burmese Ruby: A particular, rare variety of ruby, found only in Burma. The rich color is often referred to as a pigeon's blood ruby.
Byzantine Chain: A Byzantine chain is an intricately woven, heavy link chain.
Cable Chain: A cable chain consists of interlocking “o” links.
Cabochon: A cutting style, in which a gemstone is cut with a smoothly domed top. Cabochons may be cut of transparent, translucent or opaque gemstones. Special effects, such as asterism, chatoyancy, adularescence and opalescence cannot be achieved without a cabochon cut.
Calcium Carbonate: A mineral which forms in layers to form a pearl's nacre.
Cameo: A gemstone carving technique, in which an image is created by cutting through various layers of a gem, shell or other material.
Canary Diamond: A term for a fancy yellow colored diamond with intense yellow coloring.
Carat: A unit used to measure gemstone weight. Each carat is composed of 100 points, much like a dollar bill consists of 100 cents. One carat is equal to 0.02 gram.
Carat Total Weight: The combined weight of a particular gemstone in a jewelry item, regardless of shape or size.
Carnelian: The translucent, reddish-orange variety of chalcedony often used for cameos.
Cavity: A small empty space in the surface of a diamond.
Chandelier Earring: An earring style featuring one or more drops that dangle much like a chandelier.
Channel Setting: A style of setting wherein gemstones are secured in place by rails or channels of metal. This type of setting provides a smooth finish compared to bead or prong setting.
Charm: An item or token generally worn suspended from a bracelet or necklace.
Chatoyancy: The effect of an "eye" formed by a gemstone's natural internal structure when combined with a cabochon cut. Common stones noted for chatoyancy are tiger's-eye quartz, and cat's-eye chrysoberyl.
Chevron Prong: A Chevron prong or V-prong is a setting style designed to protect the fragile points of stones cut into fancy shapes such as princess, heart, marquis, radiant and pear.
Chip: A small area of damage or breakage on a gemstone's surface.
Choker: A necklace that is designed to be worn close to the wearer's throat.
Chrysoprase: The translucent, green variety of chalcedony.
Citrine: The yellow variety of quartz. Citrine is often used as a more affordable alternative for the November birthstone, golden topaz.
Clarity: Clarity is one of the four Cs of diamond grading, referring to a diamond's relative position on a flawless to imperfect scale. Clarity reflects both internal and external characteristics. Please visit our diamond education site for more detailed information on diamond clarity.
Clarity Grading: Applies to polished or finished diamonds. The accepted system for determining a diamond's purity based on the size, color, severity and location of inclusions. The highest level is Flawless, ranging down to Imperfect.
Clarity Plot: A diagram of the position and type of diamond inclusions as seen under a 10x microscope.
Clasp: A fastener utilized for closing bracelets, necklaces, etc. Generally manufactured in two parts, one of which is attached to either end of the jewelry item to be closed.
Clasp with Safety Latch: A safety latch is a secondary fastener attached to the side or underside of a clasp that guarantees the safety of the jewelry should the clasp break.
Cloud: A diamond inclusion composed of minute pinpoints, resulting in a hazy appearance.
Cluster Ring: A style in which numerous gemstones are set in close proximity, forming a one larger shape.
Cocktail Ring: A ring popularized as early as the 20th century, in which a cluster or grouping of gemstones often form a dome-like pattern. Generally accepted as an evening ring fashion.
Color: One of the four Cs of diamond grading, color is graded on a sliding scale with D (colorless) being the best to Z (saturated) showing yellow, brown, gray, etc. Fancy colored diamonds are graded on a separate scale. More detailed information is available on our education site under diamond color and gemstone color.
Comfort Fit: Comfort fit refers to the curved inside of a ring shank.
Comments: Additional notations found on a diamond grading certificate.
Common Prong: Common prong is a setting style wherein a series of gemstones are set closely together, sharing prongs.
Conch Pearl: A rare type of saltwater pearl grown in a conch rather than an oyster. The pearl that is produced is usually pink or white in color.
Coral: An organic substance that forms in branch-like structures. Coral comes in a wide range of colors from white, to red, to black.
Corundum: Corundum is the family name for ruby and sapphire.
Costume Jewelry: A broad based term that applies to (1) jewelry of low value. The items may be made out of inexpensive materials or gemstones, and are generally set in silver; or (2) jewelry manufactured out of base metals and imitation stones, i.e. plastics, glass, etc.
Cross: A devotional ornament generally worn as a pendant or necklace.
Crown: The upper angled section of a diamond that extends above the girdle. Please visit our diamond education site for more detailed information on diamond cut.
Crucifix Pendant: A pendant shaped like a cross, depicting the crucifixion of Christ.
Crystal (diamond inclusion): This type of inclusion is characterized as a minute mineral, air pocket or diamond occurring in the inside of a diamond. Crystals are produced during the diamond's growth process. For more information on diamond clarity, please visit our diamond education site.
Crystal (watch): The material covering a watch dial is referred to as the crystal. The material is generally made of mineral quartz, plastic, sapphire or synthetic sapphire.
Cubic Zirconia: Cubic zirconia is a manmade material that mirrors a diamond in appearance.
Cuff Bracelet: A type of wide band bracelet that has no closure. It is solid and of low flexibility.
Cuff Link: A form of fastener used to close one's shirt sleeves or cuffs. Cufflinks are manufactured in a variety of styles, some with chains, "T" bars, or double-sided.
Culet: The smallest facet located at a gemstone's base. The cutting of a culet alleviates a major pressure point on a faceted gemstone, particularly a diamond.
Cultured Pearl: A cultured pearl is created by implanting a small irritant into an oyster or mussel. Due to the collapse of the natural pearl market in the 1930s, nearly all pearls currently sold on the open market are cultured.
Curb Link: A curb link is a style of chain featuring “o” links, twisted to lay flat.
Cushion Shape: A traditional cut that is characterized by a rectangular or "pillow" shaped appearance with rounded corners and large brilliant-cut facets.
Cut: One of the four Cs, the cut of a diamond is extremely important as it creates brilliance. For more information, please refer to the diamond cut section of our diamond education site.
Depth: The total height of a diamond, measured from culet to table.
Diamond: Diamonds are created by the transformation of carbon due to the combination of intense pressure and extreme temperature. Diamond is the hardest mineral on earth. It is the birthstone for April.
Earring: A form of ornament worn suspended from the ear, either by pierced wire, screw back or clip.
EGL: The European Gemological Laboratory is one of the jewelry industry's most respected independent diamond grading facilities.
Emerald: Emerald is the richly colored green variety of beryl. It is also the birthstone for May.
Enhancements: Treatments, other than cutting or polishing, that are performed on natural gemstones to improve their durability or appearance.
Enhancer: A form of pendant with an enlarged solid or hinged bail. This permits the pendant to be worn on a wide neck chain or clipped over a strand of pearls.
Eternity Ring: A ring set with a continuous row of gems, most often diamonds. Typically, the gems are all of the same size, type and cut. The eternity band is very popular as a wedding or anniversary band, mirroring the ideal of eternal love.
Extra Facet: A facet placed without regard for symmetry and not required by the cutting style; often used to eliminate an inclusion near a diamond's surface.
Facet: Each flat surface on a gemstone is a called a facet. The combined number of facets as well as their position increase or decrease a gemstone's brilliance.
Faceted Girdle: The girdle of a gemstone is the widest point around the stone. With specific regard to diamonds, a number of small facets may be cut into the girdle to increase the stone's brilliance.
Feather: A diamond inclusion which typically has a white appearance. For more information on, please refer to our diamond education site.
Figaro Chain: A Figaro chain has a repetitive pattern of flattened “o” links alternating with flattened oval links.
Filigree: A metal wire decorating technique using fine wires in twisted, plaited or scrolled form. The designs were intricately woven, creating a delicate appearance.
Findings: Small metal components utilized in jewelry manufacturing. Examples are heads, pinstems, catches, posts, and wing nuts to name a few. Findings are machine made in mass quantities.
Finish: The finish of a diamond is determined by the quality of its polish, the precision of its facet arrangements, and the form of its girdle.
Fish Hook Clasp: A fish hook clasp features a hook-style tongue that slides into a navette-shaped clasp. This clasp is often utilized on pearl or bead necklaces.
Flawless: Flawless is the highest clarity grade awarded in diamond grading.
Fleur-de-lis: A French term originally used to represent royalty. The symbol depicts a stylized lotus flower or lily. Translated in to English, "fleur-de-lis" means "flower of the lily." This symbol widely appears in heraldry, furniture, tapestry, and jewelry design.
Fluorescence: Diamond fluorescence is the emission of light when viewed in long-wave ultraviolet light. The most common fluorescence color is blue; however, not all diamonds fluoresce. For more information, please view diamond color on our education site.
Flush Setting: A method of gemstone setting where the stone is set down into the metal so that it's table, or top facet, rests at the same level as the metal. The metal is pushed down over top of the stone's edge to secure it in place.
Fold-Over Clasp: A fold-over clasp is a hinged clasp wherein the upper portion snaps tightly closed over the clasp mechanism. This is often found on bracelets, including watch bracelets.
Four Prong Setting: A four prong setting is a traditional method of displaying both diamonds and gemstones. The claw-like prongs fold over the widest edge of a gemstone, securing it in place within the setting.
Freshwater Pearl: Pearls grown in coldwater lakes and rivers; often characterized by an irregular, "rice crispy" appearance.
Friction Back: A locking component accompanying a pierced earring post. The friction back or "butterfly" slides along the post, resting against the ear for a comfortable, secure earring fit.
Gallery: The gallery is the undercarriage of a ring mounting. It is often of openwork fashion, thus allowing light to pass through.
Garnet: Garnet is a gemstone that occurs in shades of red, orange and green; green being the rarest. Garnet is the birthstone for January.
Gem: A gem is an item that is organic or non-organic and possesses rarity. The intrinsic value is based on quality, beauty, size, durability as well as rarity. Synthetics, glass, plastic and other imitations do not qualify as gems.
GIA: The Gemological Institute of America is the jewelry industry's leading authority on gemstones, laboratory research, education and diamond grading reports.
Girdle: The thin band that runs around the widest part of a diamond. The girdle separates the top portion, or crown, from the lower section, the pavilion, of a stone. The girdle is generally left unpolished but may have facets cut into it for greater brilliance.
Gold Alloy: A mixture of metals added into precious metal such as gold, silver and platinum. The alloys are often added to strengthen the main metal. Alloys may also affect the color of the metal, such as adding copper to gold in order to create rose gold.
Gold-filled: A layer of gold applied to another, usually base metal, surface. This gives the appearance of gold, but at a fraction of the cost. In the USA, gold-filled articles must have a layer of gold equal to at least 1/20th of the total weight of the metal in the piece. Law requires that the piece be clearly marked as gold-filled.
Hardness: The ability of a gemstone, mineral, glass or other hard object to resist being abraded, or scratched.
Hardstone: A blanket term applied to opaque gemstones that are most often utilized for cameo carving. Agate, carnelian, onyx and sardonyx are examples.
High Polish: High polish is a term referring to the mirror-like surface of metal.
Illusion Setting: Illusion setting is designed to enhance the appearance of a smaller diamond. By setting the diamond into a metal plate, more light is reflected, creating the look of a larger diamond.
Imitation Gemstone: A man-made stone designed to look like a natural gemstone, but having entirely different physical properties such as hardness and specific gravity.
Imperial Jade: The most valuable variety of jadeite; it can appear as an apple-green color to blue-green emerald-like color. It is highly translucent and a solid even toned green with no mottling.
Inclusion: A foreign material that may be of solid, gaseous or liquid form that is found in a natural gemstone. An inclusion is an identifying characteristic of a gemstone. Generally inclusions are small enough that they cannot be seen by the naked eye.
Inlay: A decorating technique utilizing slices of stone, cemented into a recessed frame. The inlay is polished down to be even with the item's surface.
Invisible Setting: Invisible setting is a multi-stone arrangement, utilizing square-cut gemstones that are wired into the underside of the mounting. It is designed to allow maximum light to reflect off the stones in an uninterrupted fashion.
Iolite: A semiprecious gemstone that has blue-violet coloring.
Iridescence is a phenomenon. A soft sheen of prismatic colors appears to float over the top of a gemstone's surface, changing as the light source moves. A gemstone known for iridescence is moonstone.
Irradiation is a color change inducing process. Gemstones of poor color can be irradiated to intensify their color.
A world recognized scale used to qualify an article's gold content. Pure gold is extremely soft, so much so that a fingernail can scratch it. In its liquid form, alloys are added to strengthen the gold.
A kidney wire is a type of pierced earring mechanism that derives its name from its shape. It is a single wire with a small hook closure.
A minute crystal of diamond or spinel that extends beyond the surface of a diamond.
A navy blue colored rock having gold flecks of pyrite.
Laser Drill Hole:
The result of an enhancement process wherein an inclusion is removed from a diamond through the use of a laser.
Latch Back: A hinged latch back is a pierced earring mechanism, wherein the post is hinged, and it closes, latching into place.
Lever Back: Sometimes referred to as a “French earwire”, a leverback is a pierced earring mechanism featuring a curved post together with a hinged backing.
Lobster Clasp: A lobster clasp is a sturdy jewelry fastener found on necklaces and bracelets.
Locket: A small case, usually of oval or round shape, with a hinged lid. Lockets were designed as sentimental keepsake holders.
Luster: Luster is the reflection that results from light striking a gemstone or pearl surface.
Mabe Pearl: A type of blister pearl that forms along the lip of the oyster. They are half-round in shape. Once removed, the interior is cleaned then capped by a mother-of-pearl base; an assembled pearl.
10x Magnification: 10x magnification is the jewelry industry’s standard for the examination and grading of diamonds and gemstones.
Make: Make refers to the overall cut quality of a diamond. It is the relationship of precisely placed facets at exacting angles. The better the make, the better the brilliance of a diamond.
Matte Finish: A texturing technique, “Matte” or “Satin” finish creates a frosty surface than is softer and less reflective than a high gloss or bright polish finish.
Mesh Chain: A mesh chain is formed by delicately weaving metal links into flat, ribbon-like forms.
Millefiori: A glass art form created by fusing various colors and shapes of glass rods, then cutting a cross-section forming a mosaic. The word millefiori has its roots in the Italian language where it translates to “a thousand flowers”.
Mounting: The metal framework in which gemstones are set to make various articles of jewelry.
Nacre: It is the secretion from the mantle of mollusks such as oysters and abalone, which coats an irritant, thereby creating a pearl.
Natural: A natural is an unpolished portion of a diamond's surface or original "skin" which is left in place to maximize weight retention.
Needle: A needle is a minute crystal inclusion in diamonds and gemstones. The crystal is needle-shaped.
Omega Back: An Omega back is an earring finding that is used for both clip-on and pierced earrings. Its shape closely resembles the Greek letter Omega, from which it derives its name.
Onyx: A common variety of chalcedony. It is a banded stone that is routinely dyed black for jewelry use.
Opal: A delicate stone that occurs in many colors including white, orange, black and gray. Opal is the birthstone for October.
Opalescence: Opalescence is a phenomenon. It is a shimmering display of light that appears to wash over the surface of an opal.
Opaque: A gemstone that does not allow light to pass through it. Examples would be lapis lazuli and turquoise.
Openwork: A style of decoration in which areas of an object have open space or cut outs. This allows light to pass through an item. It also serves to lighten the overall weight. Filigree is a form of openwork.
Patina: A subtle sheen that is unique to platinum, patina is often preferred to the higher gloss look that can be achieved by polishing the metal.
Pavé Setting: Pave setting is a style in which many small gemstones of the same shape are bead set in extremely close proximity. This mass formation effectively coats the metal surface.
Pavilion: The term for the bottom portion of a diamond. The pavilion rests below the girdle section.
Pearl: Pearls are an organic gem formed in shellfish, mainly oysters, occasionally abalone, mussels and conch. Pearl is the birthstone for June.
Pearl Knot: A pearl knot is tied between each pearl to prevent rubbing which would damage the individual pearls. It also ensures safety in the event a pearl strand breaks; the pearls will not be lost.
Peg Setting: Peg setting is most frequently used in relation to pearl setting. A small metal rod is inserted into the pearl’s drill hole where it is securely glued in place.
Pendant: Any object that is suspended from a neck chain. Versions of pendants range from small drops, and single stones, to lockets, etc. A pendant is an ornament.
Peridot: A semi-precious gemstone that occurs in shades of yellow-green. Peridot is the birthstone for August.
Pigeon's-Blood Ruby: The most valuable deep-red variety of ruby. Rubies of this type come from Burma and are sometimes referred to as Burmese rubies.
Pink Gold: A gold alloy containing a high copper content.
Pinpoint: A microscopic inclusion within a diamond that can result in a cloud formation if several pinpoints cluster together.
Polish: A diamond's polish is determined by the evenness and definition of its facets. The polish is graded on a scale which ranges from ideal to poor.
Prong Setting: Prong setting uses small metal claws that are bent over the girdle of the gem to ensure it is secured in the ring.
Proportion: A term referring to cut quality, proportion reflects the relationship and balance of dimensions, angles, symmetry and finish of a polished diamond. To learn more about this diamond aspect, please view our diamond cut educational site.
Push Back: A push back is an earring mechanism accompanying a post. The post is held in place by a removable push back.
Quartz: A mineral species that occurs throughout the world in nearly every color. Examples of quartz are amethyst, citrine, and tiger's-eye, among others.
Quatrefoil: Dating to Gothic times, a quatrefoil is an ornament or decoration having a flower, or leaf-like appearance formed by four lobes. The quatrefoil motif is often found in architecture, illuminated manuscripts and jewelry design.
Rolled Gold-Plating: The process of fusing gold to base metal was invented in the early 1800s. Rolled gold plating achieves the look of gold at a fraction of the cost.
Rolo Chain: A rolo chain consists of interlocking, softly rounded, wider gauge “o” links .
Rondelle: A hollow metal bead that is generally strung in a necklace. Sometimes gemstones are set into rondelles.
Rope Chain: Rope is a style of chain in which the links are intertwined to resemble a length of rope.
Ruby: The red variety of corundum. The most valuable form is Burmese which is often referred to as "pigeon's blood". Ruby is the birthstone for July.
Safety Chain: A short chain designed to prevent loss of a bracelet or necklace. It is attached to each end in case the clasp breaks or opens.
Sapphire: The variety of corundum that occurs in every color except red. Kashmir is the most valuable of sapphires. It has a dark, velvety blue appearance. Sapphire is the birthstone for September.
Satin Finish: A texturing technique, “Satin” or “Matte” finish creates a frosty surface than is softer and less reflective than a high gloss or bright polish finish.
Saturation: The intensity of a gemstone's color is referred to as its saturation.
Screw Back: A screw back is a secure earring mechanism accompanying a threaded post. The screw back is turned until it rests comfortably against the back of the ear.
Semi-Precious: A term that has loosely been applied to all gemstones other than precious. Synthetics, simulents, glass and plastic are excluded from the semi-precious title.
Setting: The metal mount in which a gemstone is set.
Shank: A band that forms the base of a ring.
Shepherd’s Hook: A shepherd’s hook is a pierced earring finding that is formed by a simple wire bent into the form of a hook; the wire slips through the hole in the ear and continues downward with no backing or fastener.
Shoulder: The part of a ring that connects the central design to the rest of the band or shank.
Solder: A soft thin metal that when melted, is used to join together other pieces of metal. It is the equivalent of glue or cement.
Solitaire: Solitaire simply means one stone. It can refer to a pendant, but is generally used in terms of rings, especially engagement rings.
South Sea Pearl: Sometimes referred to as "Tahitian", these pearls are grown in warm saltwater. They grow in large sizes, generally 12.00 mm and larger.
Spacer: A type of bead or bar that is threaded on a multi-strand necklace or bracelet to ensure that the strands remain separated and equally spaced.
Spring Ring: A spring ring is a circular clasp made of hollow metal with an internal spring loaded closure. It is often found on necklaces and bracelets.
Stickpin: A straight pin with one decorative end attached to a long pin stem that is poked through an article of clothing. Some stickpins are accompanied by a clutch for security purposes.
Suite: A collection of jewelry that is related in design or style. An example would be a necklace together with a pair of matching earrings.
Symmetry: The term symmetry refers to the precision of facet placement on a diamond.
Table: The table is simply the largest horizontal facet on the top of a gemstone.
Tahitian Pearl: A South Sea pearl with black body color is often referred to as "Tahitian". These pearls are grown in warm saltwater. They grow in large sizes, generally 12.00 mm and larger.
Tanzanite: A blue-violet colored gemstone variety of zoisite. Its finest color can be mistaken for sapphire.
Thumbpiece: A small knob that operates a catch on bracelets, cigarette cases, compacts, etc. Generally gem set with a cabochon, when depressed, the thumbpiece allows the latch to be opened.
Toggle Clasp: A toggle clasp is a necklace or bracelet fastening device, featuring a bar on one end with an “o” ring on the other. The bar is simply slipped through the “o” to securely fasten the ends together.
Topaz: Topaz occurs in a wide spectrum of colors, such as yellow, blue, brown, pink, green and a colorless variety. Pink is the most valuable color. Blue is the most popular color. Golden Topaz is the birthstone for November.
Tourmaline: A mineral species that occurs in a spectrum of colors; the most common being shades of red and green.
Translucent: Permitting the transference of light in a diffused fashion. Objects cannot be clearly or distinctly viewed.
Transparent: The ability of light to pass through an object clearly so that any item behind the gemstone can be distinctly viewed.
Turquoise: A soft, porous stone that occurs in colors ranging from robin's egg blue to green with a brown or black matrix (veining). Turquoise is the alternate birthstone for December.
Twinning Wisp: A cloudy or wispy area produced by crystal structure distortion, usually associated with twinning planes. For more information, please see diamond clarity on our educational site.
Vermeil: Silver that has a fine layer of gold over it; sometimes referred to as gilded or gilt.
A wheat chain features interwoven links resembling a stalk of wheat.
A gold alloy consisting of a mixture of silver or zinc with gold. The white metal, in effect, bleaches the gold. White gold often carries a faint yellow undertone.
Zircon: A natural gemstone often seen in a blue color looking similar to blue topaz. Zircon is the birthstone for December.
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