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“ Traditionally, jewelry manufacturers used platinum alloyed with metals from the platinum group metals (iridium, osmium, palladium, platinum, rhodium, and ruthenium). With the proper mix of these platinum group alloys, platinum becomes one of the hardest metals making it a strong and durable jewelry metal. Platinum will not rust or corrode and the platinum family metals make it hypoallergenic and ideal for persons with sensitive skin. ”

Viva hot babes download dvd Federal Trade Commission (FTC) guidelines for platinum jewelry state that only items consisting of 950 part per thousand of pure platinum can be marked stamped “PLATINUM” or “PLAT” without more alloy information. From 750-950 Platinum, the platinum group metals must also be indicated. For example, PLAT900IRID for 10% Iridium alloy. Historically, the most common alloys in America were 95% Platinum with 5% Ruthenium or 5% Cobalt and 90% Platinum with 10% Iridium.

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  3. SHARE GAY VIDEO There is a misperception that the 950 platinum is better than the 900 platinum. However, pure platinum is very soft and the right alloy mix is what is important. Different alloys and different percentages produce better results for different jewelry purposes. Some alloy mixes work better for casting and some are better for handcrafting like bending the prongs over fragile diamond corners. Many artisans feel that PLAT900IRID is the best general-purpose alloy for diamond rings.
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