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Tagged: Platinum


  • Working With Platinum: Alloys, Properties & Tips

    By Stuller Standard | July 28, 2011

    Customers love platinum for many reasons: The most popular being that platinum and its alloys are inert, won’t discolor fingers, or cause allergic reactions. Its alloys are not susceptible to stress corrosion, as is white gold, and platinum is 70% heavier than gold. Its specific gravity is 20.1, while white gold’s is 13.1.


  • Basic Platinum Repair Techniques-Part 3

    By Jurgen J. Maerz, Platinum Guild | December 02, 2010

    Platinum/ Cobalt Alloy & Annealing The introduction of 95/5 Platinum cobalt Alloy has caused some dialog in the industry and raised some questions about just how to handle this metal. As you may or may not know, Pt/Co is slightly magnetic. This feature helps in identifying it by just filing a small stroke on a shank and then picking up the filing with a magnet. It requires care, as many jewelers use a magnet. It requires care, as many jewelers use a magnet to separate broken saw blades from filling in the the working tray and that is not feasible when dealing with Pt/Co as it will be picked up with that magnet as well.


  • Basic Platinum Repair Techniques-Part 1

    By Jurgen J. Maerz, Platinum Guild | December 02, 2010

    INTRODUCTION Before World War II platinum was the metal of choice for many fine jewelry peices, especially engagement and wedding rings. Platinum was also used to enhance the beauty of diamonds and other precious gems. Many of the world’s greatest diamonds were set in platinum, including the famous Star of Africa in the British Royal Scepter and the beautiful and famous Hope Diamond on display at the Smithsonian Institute in Washington DC. During World World II, platinum was classified as a strategic metal and deemed off limits to jewelry manufacturing, thus losing its market share to the newly developed white gold.