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Samples of Ce:LuAG, each faceted as a gemstone for use in jewelry. While LuAG is not grown specifically for the gem trade, industrial scrap is sometimes repurposed into gemstones. Lutetium aluminum garnet (commonly abbreviated LuAG , molecular formula Lu 3 Al 5 O 12 ) is an inorganic compound with a unique crystal structure primarily known for ...
A producer price index (PPI) is a price index that measures the average changes in prices received by domestic producers for their output. Formerly known as the wholesale price index between 1902 and 1978, the index is made up of over 16,000 establishments providing approximately 64,000 price quotations that the U.S. Bureau of Labor Statistics (BLS) compiles each month to represent thousands ...
Yttrium aluminium garnet (YAG, Y 3 Al 5 O 12) is a synthetic crystalline material of the garnet group. It is a cubic yttrium aluminium oxide phase, with other examples being YAlO 3 (YAP [ 2 ] ) in a hexagonal or an orthorhombic, perovskite -like form, and the monoclinic Y 4 Al 2 O 9 (YAM [ 3 ] ).
Aim to get 90 to 95% of the spot price when selling gold bars or coins, and 70 to 80% of melt value for jewelry and other items. A karat is a unit of measure for the fineness of gold. For example ...
The wholesale price index (WPI) is the price of a representative basket of wholesale goods. The WPI is published by the Economic Adviser in the Ministry of Commerce and Industry. The Wholesale Price Index focuses on the price of goods traded between corporations, rather than the goods bought by consumers, which is measured by the Consumer Price ...
Signet Jewelers Ltd. (Ratner Group 1949–1993 then Signet Group plc to September 2008) is, as of 2015, the world's largest retailer of diamond jewellery. [1] The company is domiciled in Bermuda and headquartered in Akron, Ohio, and is listed on the New York Stock Exchange.
The carat fractional system is increasingly being complemented or superseded by the millesimal system, described above for bullion, though jewelry generally tends to still use the carat system. Conversion between percentage of pure gold and karats: 58.33–62.50% = 14 c (acclaimed 58.33%) 75.00–79.16% = 18 c (acclaimed 75.00%)
The YIG spheres themselves are on the order of 0.5 mm in diameter and are manufactured from slightly larger cubes of diced material by tumbling, as is done in the manufacture of jewelry. The garnet is mounted on a ceramic rod, and a pair of small loops around the sphere couple fields into and out of the sphere; the loops are half-turns ...