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Message:: [QUOTE="KikoBlueEyes, post: 3398592, member: 8363"]I am not a jewelry person, but according to this article Pall is used for Palladium and Ruth for Ruthenium 'In most countries where platinum jewelry is manufactured, the pure platinum content is at least 85 percent, according to Platinum Today. Makers commonly alloy platinum with the PGM metals—palladium, ruthenium and iridium. Copper and cobalt are also commonly alloyed with platinum for polishing ability and color. Just 5 percent of an alloy metal can give soft platinum the necessary hardness for a ring, according to 1 Wedding Band. Platinum content markings are based on parts per thousand of pure platinum in the ring. According to the Federal Trade Commission, in the United States, "Platinum" (without additional qualifications) can only be used to mark and describe rings made with at least 950 parts pure platinum throughout. Such a ring may simply read "Platinum," "Plat" or "Pt," or may be marked "95% Plat," "950 Plat" or "950 Pt." Rings containing 850 or more parts pure platinum may be described as "platinum" if they use the number "850," or "85% or more" to qualify "Platinum" or its abbreviation in the content marking. Abbreviation marks for other PGMs include: "Plat." or "Pt." for platinum; "Irid." or "Ir." for iridium; "Pall." or "Pd." for palladium; "Ruth." or "Ru." for ruthenium; "Rhod." or "Rh." for rhodium; and "Osmi." or "Os." for osmium."[/QUOTE]