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The Portuguese Diamond at the Smithsonian National Museum of Natural History, the largest faceted diamond in that collection. 1928: Sold the 127-carat Portuguese Diamond for $373,000 to Hopkins Joyce. 1929: Black, Starr & Frost merged with Gorham Corporation, and was renamed Black, Starr, Frost-Gorham.
Cutting and polishing diamonds in the Netherlands 1946. The art of cutting a gem is an exacting procedure performed on a faceting machine.The ideal product of facet cutting is a gemstone that displays a pleasing balance of internal reflections of light known as brilliance, strong and colorful dispersion which is commonly referred to as "fire", and brightly colored flashes of reflected light ...
Example of bead set diamonds Example of pavé set diamonds "Bead setting" is a generic term for setting a stone directly into metal using gravers, also called burins, which are essentially tiny chisels. A hole is drilled directly into the surface of the metal, before a ball burr is used to make a concave depression the size of the stone.
Mary, Queen of Scots, owned jet buttons and clothes embroidered with jet beads. [43] Elizabeth I bought 1000 "black jet bugle drops" to embroider headdresses in 1587. [44] Anne of Denmark ordered a gown of "double burret" silk in June 1597 loaded with jet passementerie and 360 jet buttons. The gown was too heavy to wear and she ordered it to be ...
Group of precious and semiprecious stones—both uncut and faceted—including (clockwise from top left) diamond, uncut synthetic sapphire, ruby, uncut emerald, and amethyst crystal cluster. A gemstone (also called a fine gem , jewel , precious stone , semiprecious stone , or simply gem ) is a piece of mineral crystal which, when cut or ...
The aqua push-up brassiere is handset with nearly 3,400 precious gems, including 142 carats of white and yellow diamonds, pearls, faceted citrines and aquamarines, all set in 18-karat white and ...