POLISH OF DIAMONDS BLEMISHES. a) Extra facet: Any polished facet, which is added to the normal number of facets, of a particular cut. b) Natural: Unpolished surface, characteristics for a rough diamond. c) Nick: Small blemish, which manifests itself in the removal of material. d) Scratches: Fine, white linear depressions. e) Polish lines: Very fine […]
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CUT PROPORTIONS OF DIAMONDS The word cut has a different meaning. It is synonymous with the making: a combination of operations (cleaving, sawing, bruiting, polishing) resulting in the shape of a diamond. These may have different forms and various styles: rose cut, brilliant cut, and mixed-cut…. Everything that contributes to creating certain conditions, good or
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quality chart of diamonds, these parameters will help you to buy diamonds., the quality of any polished diamond is judged using the following four criteria the 4cs. these four parameters are called 4cs. carat weight of diamond: the greater the weight of the diamond, the rarer it is, hence the demand for it and its
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1. luster of diamonds luster is surface gloss, which depends to a large extent on the refractive index, and also on the polish of the gemstone. 2. life of diamonds the life of a gem is regarded as the amount of white light, which after falling on the stone from the front is, reflected back
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hardness of diamonds in the diamond crystal structure, there are virtually no free bonds – no free electrons, no unjoined connections. on the surface, only about one bond in 1000 ” dangles in space “. imagine a girder bridge with some of the bolts and rivets missing so that ties and struts stick out and
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common shapes for the rough diamonds
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The Jubilee Diamond, originally known as the Reitz Diamond is a colorless, cushion-shaped diamond weighing 245.35 carats (49.07 grams), making it the sixth-largest diamond in the world. It was originally named after Francis William Reitz, the then president of the Orange Free State where the stone was discovered, before being renamed to honor the 60th
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The Jonker diamond was found at the Elandsfontein mine in South Africa by Johannes Jacobus Jonker on 17 January 1934. The diamond was 726 carats, which at the time was the fourth largest uncut gem ever found. Weight 726 carats (145.2 g) Color D-flawless Country of origin South Africa Mine of origin Elandsfontein Discovered 17 January 1934 Cut
The Vargas Diamond, discovered in Brazil on August 13, 1938 (July 1938 according to Ball & Kerr) by Joaquim Venancio Tiago and Manoel Miguel Domingues, was 726.6 carats (145.32 g) when pulled out of the ground. Vargas DiamondWeight 726 carats (145.2 g)Discovered 1938Cut by Adrian Graselly Twenty-nine smaller diamonds were carved from the larger rough
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The Golden Jubilee Diamond, a 545.67-carat (109.13 g) brown diamond, is the largest cut and faceted diamond in the world. It outweighs Cullinan I by 15.37 carats (3.07 g). The Golden Jubilee Diamond was discovered in 1985 at the Premier Mine, which is also the origin of the Cullinan diamond (1905) and other notables such
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