Although the most famous example of the precious metal platinum dates back to the 700 BC Casket of Thebes, platinum remained a little-known metal that was rarely utilized until modern times. In fact, the Spanish Conquistadors of the 16th century found platinum to be a nuisance that interfered with their gold mining. Dismissing it as merely a form of un-ripened gold, the Spanish found no value in platinum other than as a means of counterfeiting.

As scientists of the 18th century revisited platinum, the metal’s high melting point and resistance to corrosion confounded them. When a Swedish scientist was finally successful in melting platinum by adding arsenic to the mixture, the metal began to be used in the decoration of porcelain and in making laboratory instruments.


Platinum continued to be molded into a variety of industrial uses over the next few centuries until the use of platinum in jewelry experienced a dramatic rise in Japan during the 1960s. Its appeal in the form of jewelry was a result of its purity, color and value. When high-temperature jewelers’ torches were developed, platinum quickly became the diamond setting of choice.

Due to its strength, platinum is typically used in its purest form of 95 percent. Platinum jewelry typically falls into three categories of purity, each possessing its own type of stamp or marking.

Platinum = Contains 95% platinum and is considered pure

Plat/Pt. = Jewelry that is 85, 90 or 95% will have its parts per thousand in front of the marking (Example: 900Pt. or 850Plat.).

Platinum Group Metals = Alloy containing multiple metals including platinum. Each metal will be disclosed (Example: 700Plat. 200Pall. 50Rid).

Platinum is the most abundant in a family of six extremely heavy metals including iridium, palladium, ruthenium, rhodium and osmium. These metals are often used in the alloy mixture of Platinum Group Metals because they have very similar chemical properties and allow jewelers to enhance the natural qualities of each of the different precious metals.

Platinum has also been made into various numismatic coins and bullion. Platinum currency is most commonly used as a prestigious investment option.

Stop by C.D. Clark & Co. today to sell your platinum valuables. We will test and weigh your items and provide you with an estimate based off of that day’s platinum trading market value.

Choose a company you can trust. Experience the C.D. Clark & Co. Gold Buyers difference.

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