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  2. Colored gold - Wikipedia

    en.wikipedia.org/wiki/Colored_gold

    Rose gold is a gold-copper alloy [8] widely used for specialized jewelry. Rose gold, also known as pink gold and red gold, was popular in Russia at the beginning of the 19th century, and was also known as Russian gold. [9] Rose gold jewelry is becoming more popular in the 21st century, and is commonly used for wedding rings, bracelets, and ...

  3. Diamond color - Wikipedia

    en.wikipedia.org/wiki/Diamond_color

    The majority of mined diamonds fall between white and pale yellow or brown; what is known as the normal color range. Diamonds of more intense color (usually yellow, but in some cases red, green or blue) are termed fancy color diamonds. Black diamonds are also fancy color diamonds. All other factors being equal, the most valuable diamonds are ...

  4. Etruscan jewelry - Wikipedia

    en.wikipedia.org/wiki/Etruscan_jewelry

    While pure gold is 24 karat, 18 and 15 karat gold benefit from their alloys. 18 karat gold is much more durable and harder than 24, and 15 karat is so much more durable and 'hard' than 18 karat. Some jewelry of the Regolini-Galassi tomb was too; thin, delicate and big to have been worn while more robust and less poutre gold ornamentation was ...

  5. Tavernier Blue - Wikipedia

    en.wikipedia.org/wiki/Tavernier_Blue

    Detailed view of the recreated great Golden Fleece of king Louis XV of France. Below the 107 carats (21.4 g) spinel Côte de Bretagne hangs the French Blue diamond and the fleece itself, set with hundreds of yellow diamond replicas. The Tavernier Blue was the precursor diamond to the Blue Diamond of the French Crown (aka the French Blue).

  6. Hierarchy of precious substances - Wikipedia

    en.wikipedia.org/wiki/Hierarchy_of_precious...

    The measurement of sales of popular music starts high relative to the wedding anniversary scale, concentrating on gold and platinum (see gold album).Likewise, credit card companies usually have a "gold card" and a "platinum card" (many formerly had a "silver card" then followed by a "gold card", but due to similarity in appearance between silver and platinum these were often discontinued with ...

  7. Gold-filled jewelry - Wikipedia

    en.wikipedia.org/wiki/Gold-filled_jewelry

    If the gold layer is 12 kt or higher, the minimum layer of karat gold in an item stamped gold-filled marks must equal at least 1 ⁄ 20th the total weight of the item. The most common stamps found on gold-filled jewelry are 1 ⁄ 20th 12kt GF and 1 ⁄ 20th 14kt GF. Also common is 1 ⁄ 10th 10kt. These standards are for modern gold-filled items.