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The original rough diamond was found in 1966 in the Premier Mine in South Africa, weighing 241 carats (48.2 g). Harry Winston cut it into the shape of a pear weighing 69.42 carats (13.884 g). At the time of sale in 1969, the diamond was set in a platinum ring with two smaller diamonds on either side.
In bezel settings the diamond or gemstone is completely surrounded by a rim of metal, which can be molded into any shape to accommodate the stone. Used to set earrings, necklaces, bracelets, and rings, bezel settings can have open or closed backs, and generally can be molded to allow a lot of light to pass through. Channel settings set the ...
Sapphires are a color variety of corundum, a crystalline form of aluminium oxide (Al 2 O 3). Corundum is one of the hardest minerals, rating 9 on the Mohs scale. Corundum gems of most colors are called sapphires, except for red ones, which are called rubies. The term "Yogo sapphire" refers only to sapphires from the Yogo Gulch.
Diamonds and colored gemstones are set between two rows of pearls on the circlet and are also set into the four arches that rise behind the fleur-de-lis and the eight ornamental points between the fleur-de-lis. At the junction of these four arches is a small pedestal surrounded by two rows of small diamonds on either side of a row of small pearls.
Diamonds occur in a variety of colors—steel gray, white, blue, yellow, orange, red, green, pink to purple, brown, and black. [2] [3] Colored diamonds contain interstitial impurities or structural defects that cause the coloration; pure diamonds are perfectly transparent and colorless.
A prong set diamond in a gold ring.. Prong setting or prong mount refers to the use of metal projections or tines, called "prongs", to secure a gemstone to a piece of jewelry.A prong setting is one component of what is known to jewelers as a head, a claw-shaped type of binding (typically three, four, or six individual prongs per head) that is welded or soldered to a jewelry item to mount (or ...
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