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Platinum is a chemical element; it has symbol Pt and atomic number 78. It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Its name originates from Spanish platina, a diminutive of plata "silver". [7] [8] Platinum is a member of the platinum group of elements and group 10 of the periodic table of ...
Millesimal fineness is a system of denoting the purity of platinum, gold and silver alloys by parts per thousand of pure metal by mass in the alloy. For example, an alloy containing 75% gold is denoted as "750".
^ XVII In the United Kingdom, the number of sales required to qualify for Platinum, Gold and Silver discs was dropped for singles released after 1 January 1989 to the current thresholds of Silver (200,000 units), Gold (400,000 units), and Platinum (600,000 units). Prior to this the thresholds were Silver (250,000 units), Gold (500,000 units ...
In 1976, RIAA introduced the platinum certification, first awarded to the Eagles compilation album Their Greatest Hits (1971–1975) on 24 February 1976, [6] and to Johnnie Taylor's single "Disco Lady" on 22 April 1976. [7] [8] As music sales increased with the introduction of compact discs, the RIAA created the Multi-Platinum award in 1984 ...
When the RIAA changed the certification standards to match retail distribution in August 2006, all Platinum and Multi-Platinum awards for a digital release were withdrawn. Gold certifications, however, were not, meaning a song that was downloaded over 100,000 times and certified so by the RIAA during that time frame retains its Gold status.
A hallmark is an official mark or series of marks struck on items made of metal, mostly to certify the content of noble metals—such as platinum, gold, silver and in some nations, palladium. In a more general sense, the term hallmark is used to refer to any standard of quality.
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Chaika (Russian: чайка, meaning "gull") Chaika is a Russian watchmaking company founded in 1937 in the town of Uglich. The factory started with the production of movement parts and stones. Gradually the full-cycle production of watches and movements was organized. In the 1980s the factory produced more than 500,000 watches per year.