From prehistoric civilization to the protagonist of the princess and pop - platinum, so-called "new metal", its story is far longer than your imagination. Platinum is contained in the meteorite, and the earliest records can be traced back to 2 billion years ago.
So isn't all platinum the same? According to different platinum content, platinum can be generally divided into pure platinum and rhodium platinum (K white gold (white gold) is not platinum).
Pure Platinum
Pure platinum refers to platinum, which contains the highest amount of platinum or fineness. Its white luster is natural and won't fade. It can be used with any type of skin. Its strength is twice that of gold. Its toughness is better than ordinary precious metals.
Pure platinum is often used to make engagement rings to show the purity and longevity of love. In foreign countries, many people believe that the use of gold inlaid diamonds may lead to the yellowing of the diamonds, thereby greatly reducing the price of diamonds. With platinum diamonds, you can maintain the pure white color of diamonds, especially for engagement rings, set with platinum diamonds, both white and crystal clear, a symbol of pure love forever.
Platinum
Ruthenium platinum refers to an alloy composed of ruthenium and platinum. Its color is also silver-white; it has a strong metallic luster; its hardness is high; its relative density is relatively large; its chemical properties are stable. It is the best platinum alloy jewelry material.
According to the different content of rhenium and platinum, it can be generally divided into the following three types. Its composition, relative density, and melting point are:
10% rhodium-platinum alloy, 21.54, 1788 °C;
15% rhodium-platinum alloy, 21.59, 1821 °C;
5% rhodium-platinum alloy, 21.50, 1779°C.
K Platinum (White K Gold)
Due to the high hardness of platinum, when making jewellery, it is necessary to incorporate alloys of Other metals in order to properly reduce the hardness. In order to reduce the cost of platinum jewelry, it is often blended with other metals to make alloys. Therefore, K Platinum appeared in the jewelry market. Moreover, people gave K platinum different meanings.
White K gold pt950
Usually people use the following first statement.
1) One of the sayings about the meaning of K platinum
Strictly speaking, K Platinum is not pure platinum; that is, K Platinum does not contain Platinum at all. The argument that "K platinum is an alloy of platinum and other metals of different fractions" is entirely a misunderstanding of the literary concept.
Due to the scarce output of platinum, the high price, and the high melting point, the average country rarely uses platinum to produce real K white gold. Usually, gold and palladium or metals such as nickel, silver, copper, and zinc are smelted into a white alloy, and it is called "K white gold." Therefore, actually, K Platinum is a white alloy that is fused with gold and palladium or nickel, silver, copper, zinc, and other metals. Its main ingredient is still gold. Among them, the maximum gold content is 75%. Smelting gold with nickel also 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 gold. In the purity, rarity, durability, and natural color and luster, white gold cannot be compared with platinum. And, it cannot be marked with the "Pt" sign. Can only be marked with gold content "18K", "14K" and other imprints.
The calculation of K platinum fineness, like that of K gold, is still calculated as gold content. For example, the most common 14K platinum on the market (called "40% K Platinum" or "226 Gold" in the Hong Kong and Macau market) is smelted from 58.5% of gold, 22.4% of silver, 14.1% of copper and 5% of nickel. Made. 18K white gold (called “60% K Platinum†or “334 Gold†in Hong Kong and Macau market) is smelted from 75% of gold, 10% of silver, 4 to 10% of zinc and 5% of nickel.
2) The second statement about the meaning of K platinum
K Platinum is an alloy of platinum and other metals.
Melting with gold, nickel, silver, palladium, copper, zinc and platinum can all be made into K white gold. K platinum is pure white. In the 14K K platinum, 22.4% silver, 14.1% copper, and 5% nickel; among the 18K K platinum, silver is 10.0%, nickel 5%, and zinc 4 to 10%. In the Hong Kong market and other places, 40% of the K platinum, playing 14K words, also known as "226 gold"; 60% K platinum, playing 18K words, also known as "334 gold."
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