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PGI Wants Jewelers to Know How Platinum Alloys Affect Performance April 20, 2022 (0 comments)

PGI-PLatinum Alloys

New York, NY--What’s in your platinum? Sounds like an easy enough question, yet many retailers and industry members do not know the answer. To assist in finding the answer to this question, Platinum Guild International USA is launching a new initiative to educate the industry on the importance of understanding different platinum alloys and how they impact jewelry manufacturing.

Nearly all precious metal jewelry is made from alloys, a mixture of the primary precious metal and one or more other precious or base metals. Many are aware that platinum is naturally white. However, ensuring it will not fade or change color over time; and that it holds diamonds and gemstones most securely, requires the use of additional alloys. Retailers may not know the alloy composition of the platinum jewelry they currently sell. Other metals used in creating platinum jewelry alloys commonly include ruthenium, cobalt, and iridium, in various percentages.

These percentages are of utmost importance, as the alloy composition can significantly impact wear performance. Below is an easy-to-reference infographic summarizing the most commonly used platinum jewelry alloys in the US and their impact on jewelry manufacturing.

Most platinum jewelry in the US is made from alloys that are best for all manufacturing processes like casting, machining, die-striking and/or hand-fabricated designs. As the infographic shows, PGI USA has identified one alloy that should not be considered for casting jewelry or setting gemstones, as the resulting product may not meet long-term quality control standards. Posing the question ‘What’s in Your Platinum’ to manufacturers and retailers will help PGI USA to share important guidance to those companies using a problematic alloy. The goal is helping them switch to a better alternative that ensures optimal gemstone security, wear performance and customer satisfaction.

“All alloys are not created equal, so it’s important to know what alloy is being used in your jewelry,” says Teresa Frye, president of Techform Advanced Casting Technology, commented “Most platinum jewelry in the US is 95% platinum – but that other 5% will determine the difference between optimal performance, or something that’s too soft for jewelry making.”

PGI USA has set up a dedicated web page,, for retailers and manufacturers to provide information on the specific alloys being used in their platinum jewelry.

Those interested in learning more about what’s in their platinum should contact Kevin Reilly, PGI USA’s SVP at

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