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Definition
the art of cutting and polishing gem materials other than diamond
also the term for the person who cuts and polishes these materials |
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| the term used for the fashioning and polishing of diamond |
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| gem material in an unfashioned state |
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| the weight retained in the cut stone compared to the weight of the original rough |
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| cut gems with flat, highly polished faces known as facets |
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| gemstones that have no facets (frequently with curved surfaces) |
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| the symmetrical appearance of the stone |
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| the relationship between the sizes and angles of various faces |
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| refers to the quality of polish or finish |
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the part of a faceted gemstone above the girdle; the 'front' or 'top' of the gemstone
designed to create dispersion |
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the part of a faceted gemstone below the girdle, the facets below the girdle
responsible for brilliance |
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Definition
| a triangular, twinned octahedral crystal of diamond or spinel |
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Definition
| a method of shaping one diamond with another; a sawn, cleaved or who diamond is mounted in a lathe and rotated; a second diamond is held firmly against the rotating diamond to bring it to the required shape for the next stage in fashioning |
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| a horizontal cast iron disc or lap used with a mixture of diamond dust and oil to polish and facet diamonds |
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| a holder in which a gemstone is set for cutting and polishing |
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| holds the dop forming a tripod with two legs at the back adn the dop with the diamond at the front |
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| a carving in relief, usually of shell or agate, which utilizes the differently colored layers to good effect |
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Definition
| incised carving of gem materials |
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