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https://www.specialtymetals.com/blog/2016/6/9/how-to-recognize-platinum-when-you-see-it
Jun 09, 2016 · The fact is, the platinum items you find can have scratches, abrasions, and signs of wear. So keep your eyes open and don’t pass these items by. Myth Two: Platinum Is Always Bright and Shiny. Platinum doesn’t tarnish as heavily as silver does, but over time its surface does become cloudy and dull. So if you come across an item of white-toned jewelry that has lost its sheen, it could still be …Estimated Reading Time: 2 mins
http://lc.pandahall.com/articles/1203-how-to-identify-platinum-jewelry.html
Oct 17, 2013 · Buy a platinum metal test kit to identify. First, rub your platinum jewelry on a test stone, and then add a drop of acid on the stone with metal residue on it. If the jewelry does not react with acids very fast, it could be made of platinum. 6.
https://kipkis.com/Identify_Platinum_and_Silver_Jewelry
Feb 05, 2018 · Platinum is a very rare and expensive metal. Therefore, all platinum jewelry will be marked to show authenticity. Look for the words “Platinum”, “PLAT”, or “PT” followed or preceded by the numbers “950” or “999”. These numbers refer to the purity of the platinum, with “999” as the most pure.
https://www.aupreciousmetals.com/how-can-i-tell-if-my-items-are-gold-platinum-or-silver
The colors of platinum and silver jewelry are very similar. The most reliable way to tell if your item is silver, platinum or fake is to take it to a certified refiner. If you want to check for yourself, look for the following assay markings:Estimated Reading Time: 2 mins
https://www.leaf.tv/articles/how-to-identify-a-platinum-ring/
Look on the inner shank of the ring for any detailed letters or numbers. If the shank has a visible, "PT" symbol, reads "900 PLAT"or has "950 PLAT" markings, then the ring is definitely platinum. If the ring shows a 9K, 10K, 14K, 18K, 22K, with or without a series of three numbers, then the ring is not platinum.Author: Kristine Tucker
https://www.sellyourgold.com/faq/my-items-gold-silver-or-platinum
An oval stamp would indicate the item is silver. A 'house' shaped mark is used for platinum items. The number inside the shape is called the millesimal stamp number - this will tell you the actual precious metal content or the purity of the precious metal.
https://www.leaf.tv/articles/how-to-identify-gold-silver-and-platinum-metals-like-a-jeweler/
Oct 24, 2009 · Identify sterling silver by finding the number 925. Some items that appear to be gold but have the 925 stamp are made of gold-plated sterling silver. Identify platinum by using this list: Plat 900 PLAT 950 PLAT 10% IRID PLAT 10% IRID 90% PLAT COPLAT. Identify Palladium by the marking PD.
https://www.worthy.com/blog/knowledge-center/jewelry/how-to-identify-valuable-items-in-your-jewelry-box/
Jun 24, 2021 · If you see a darker or silvery color showing through parts of a gold chain that see heavy wear -and if parts of it are discolored or flaking off- this is likely a gold-plated chain. When solid gold or platinum jewelry wears down, the part showing through should still be consistent with the original color.
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