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Tiffany & Company, Union Square, Manhattan, storage area with porcelain, c. 1887. Tiffany & Co. was founded in 1837 by Charles Lewis Tiffany and John B. Young, [ 15] in New York City, as a "stationery and fancy goods emporium", with the help of Charles Tiffany's father, who financed the store for only $1,000 with profits from a cotton mill. [ 16]
^ Florida's state gem, moonstone, was adopted to highlight Florida's role in the United States' Lunar program, which landed the first astronauts on the Moon. [81] ^ Since 1983, Massachusetts has had 3 other official state rocks: State Historical Rock (Plymouth Rock), State Explorer Rock (Dighton Rock), and State Building and Monument Stone . In ...
Gemstone. 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 ...
Diamond[ a] is a gemstone formed by cutting a raw diamond. Diamonds are one of the best-known and most sought-after gems, and they have been used as decorative items since ancient times. The hardness of diamond and its high dispersion of light —giving the diamond its characteristic "fire"—make it useful for industrial applications and ...
The Gemological Institute of America ( GIA) is a nonprofit institute based in Carlsbad, California. It is dedicated to research and education in the field of gemology and the jewelry arts. [ 1] Founded in 1931, GIA's mission is to protect buyers and sellers of gemstones by setting and maintaining the standards used to evaluate gemstone quality.
Jewels of Diana, Princess of Wales. Diana wearing a pearl necklace and pearl earrings, featuring double wire of gold with diamonds and four equidistant knots, during a visit to Washington, D.C. in June 1997. Diana, Princess of Wales, owned a collection of jewels both as a member of the British royal family and as a private individual.
Graff Diamonds International Ltd. Graff is a British multinational jeweller based in London. [ 1] It was founded by British jeweller Laurence Graff in 1960. A vertically integrated company, Graff operations comprise the design, manufacture and retail distribution of jewellery and watches.
[14] [15] These treatments are typically applied in a vacuum chamber under mild heat, to open the pores of the stone and allow the fracture-filling agent to be absorbed more effectively. [16] The U.S. Federal Trade Commission requires the disclosure of this treatment when an oil-treated emerald is sold. [17]
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