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A moissanite engagement ring Moissanite: emerald cut. Moissanite was introduced to the jewelry market as a diamond alternative in 1998 after Charles & Colvard (formerly known as C3 Inc.) received patents to create and market lab-grown silicon carbide gemstones, becoming the first firm to do so. By 2018 all patents on the original process world ...
Moissanite is superior to cubic zirconia in two ways: its hardness (8.5–9.25) and low SG (3.2). The former property results in facets that are sometimes as crisp as a diamond's, while the latter property makes simulated moissanite somewhat harder to spot when unset (although still disparate enough to detect).
Charles & Covard was the first company to produce and sell synthetic moissanite, [9] under U.S. patent US5723391 A, first filed by C3 Inc., North Carolina. [10] The gemstones are made from silicon carbide crystals, supplied under an exclusive agreement from fellow North Carolina company Cree Inc. since 2014. [11]
Coins 'N Things, also known as CNT Inc., [1] is a privately held, family-controlled business in Bridgewater, Massachusetts, that was established as a retail shop for coin collectors and is now the largest wholesale vendor of gold in the United States. Coins 'N Things was started in 1973 by Louis Oliari, an engineer and coin collector.
A young girl was buried with: 2 silver fibulae, a necklace (with coins), bracelet, gold earrings, a pair of hair-pins, comb, and buckle. [49] The Celts specialised in continuous patterns and designs, while Merovingian designs are best known for stylised animal figures. [50] They were not the only groups known for high quality work.
A coin assayer is often assigned to each mint or assay office to determine and assure that all coins produced at the mint have the correct content or purity of each metal specified, usually by law, to be contained in them. This was particularly important when gold and silver coins were produced for circulation and used in daily commerce. Few ...
Rare Coin Wholesalers is a rare-coin company that specializes in United States rare coins. Located in Irvine, California, Rare Coin Wholesalers buys, sells, appraises and trades rare coins and precious metals. [1] Originally established as a S.L. Contursi company in 1990, [2] the owners have bought and sold over two billion dollars' worth of ...
Goldline, LLC was a retail seller of gold and silver coins, and other precious metals for investors and collectors. [1] Goldline traced its formation to a Deak & Co. subsidiary created in 1960, a firm that in the late 1970s was the largest storefront gold retailer and later went into bankruptcy in the 1980s. The company was later bought and ...
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