From prehistoric civilization to the protagonist of princess and pop music - platinum, the so-called "new metal", its story is far longer than your imagination. Platinum is housed in meteorites, and the earliest records can be traced back to 2 billion years ago.
So isn't all platinum the same? Platinum is generally divided into pure platinum and platinum (depending on the amount of platinum) (K white gold (white gold) is not platinum).
Pure platinum
Pure platinum refers to platinum with the highest platinum content or color. Its white luster is natural and will not fade, and it can match any type of skin. Its intensity is twice that of gold. Its toughness is better than ordinary precious metals.
Pure platinum is often used to make engagement rings to express the purity of love and forever. In foreign countries, many people think that the use of gold inlaid diamonds may lead to yellowing of the diamonds, thus greatly reducing the price of diamonds. Inlaid with platinum, you can maintain the pure white color of the diamond, especially for engagement rings, set with diamonds in platinum, white and crystal, symbolizing the purity of love forever.
Platinum
Platinum platinum refers to an alloy composed of rhodium and platinum. Its color is also silvery white; it has strong metallic luster; high hardness; relatively high density; stable chemical properties. It is the best platinum alloy jewelry material.
According to the content of bismuth and platinum, it can be generally divided into the following three types. Its composition, relative density and melting point are:
10% bismuth-platinum alloy, 21.54, 1788 ° C;
15% bismuth-platinum alloy, 21.59, 1821 ° C;
5% bismuth-platinum alloy, 21.50, 1779 °C.
K Platinum (White K Gold)
Since the hardness of platinum is too large, in order to appropriately reduce the hardness in the production of jewelry, it is necessary to incorporate an alloy of other metals. In order to reduce the cost of platinum jewelry, it is also often incorporated into other metals to make alloys. Therefore, K Platinum appeared in the jewelry market. Moreover, people have given K Platinum different meanings.
White K gold pt950
Usually, people use the first statement below.
1) One of the meanings of K Platinum
Strictly speaking, K Platinum is not a platinum of lower purity; that is, K Platinum does not contain platinum at all. The argument that "K Platinum is an alloy of different parts of platinum and other metals" is completely a misunderstanding of hope.
Due to the scarcity of platinum production, high prices, and high melting point, platinum is rarely used in the general world to produce true K platinum. Usually, gold and palladium or metals such as nickel, silver, copper, and zinc are used to smelt into a white alloy, which is called "K Platinum". Therefore, in fact, K Platinum is a white alloy made of gold and palladium or a metal such as nickel, silver, copper or zinc. Its main ingredient is still gold. Among them, the gold content is up to 75%. Gold is smelted together with nickel and forms a white alloy. In addition, metals such as silver, copper, zinc, and palladium are also added. So, to be more precise, K Platinum should be called white K gold. In terms of purity, rarity, durability, and natural color and luster, white gold cannot be compared to platinum. Also, it cannot be marked with the "Pt". Only the gold content can be marked with "18K", "14K" and so on.
The calculation of K white gold color is the same as K gold, which is still calculated according to the gold content. For example, the most common 14K white gold on the market (called “40% white gold†or “226 gold†in Hong Kong and Macao market) is smelted by 58.5% gold, 22.4% silver, 14.1% copper and 5% nickel. Made. 18K white gold (called "60% white gold" or "334 gold" in Hong Kong and Macao market), made of 75% gold, 10% silver, 4-10% zinc and 5% nickel.
2) The second meaning of K Platinum
K Platinum is an alloy of platinum with other metals.
Melted with gold, nickel, silver, palladium, copper, zinc and platinum, all can be refined into K white gold. K white gold is pure white. In 14K K white gold, it contains 22.4% of silver, 14.1% of copper and 5% of nickel; in 18K of K white gold, it contains 10.0% of silver, 5% of nickel and 4-10% of zinc. In the market of Hong Kong and other places, 40% of the white gold, playing 14K words, also known as "226 gold"; 60% K white gold, playing 18K words, also known as "334 gold."
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Label: Platinum
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