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2. 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 ...

3. Colored gold - Wikipedia

   en.wikipedia.org/wiki/Colored_gold

   Rhodium-plated white gold wedding ring. The word white covers a broad range of colors that borders or overlaps pale yellow, tinted brown, and even very pale rose. White gold is an alloy of gold and at least one white metal (usually nickel, silver, platinum or palladium). [4] Like yellow gold, the purity of white gold is given in karats.

4. Precious metal - Wikipedia

   en.wikipedia.org/wiki/Precious_metal

   Precious metals such as gold, silver, and platinum have been used for millennia to create objects of cultural and artistic significance. In jewelry, they are a cornerstone for crafting wedding bands, engagement rings, and ceremonial adornments, often symbolizing love, commitment, and social status. [11] [12] [13]

5. Wedding ring - Wikipedia

   en.wikipedia.org/wiki/Wedding_ring

   In Western nations, wedding rings are often forged of gold, palladium, platinum, argentium silver, titanium, tungsten, or more recently, silicone. [ 10 ] [ 11 ] Common engravings on the inside of the ring include the name of one's spouse, the names of both spouses, the date of the wedding or a phrase of significance to the spouses.

6. Palladium - Wikipedia

   en.wikipedia.org/wiki/Palladium

   Palladium has been used as a precious metal in jewelry since 1939 as an alternative to platinum in the alloys called "white gold", where the naturally white color of palladium does not require rhodium plating. Palladium, being much less dense than platinum, is similar to gold in that it can be beaten into leaf as thin as 100 nm (1 ⁄ 250,000 ...

7. Platinum group - Wikipedia

   en.wikipedia.org/wiki/Platinum_group

   Naturally occurring platinum and platinum-rich alloys were known by pre-Columbian Americans for many years. [5] However, even though the metal was used by pre-Columbian peoples, the first European reference to platinum appears in 1557 in the writings of the Italian humanist Julius Caesar Scaliger (1484–1558) as a description of a mysterious metal found in Central American mines between ...