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Platinum Jewelry: What are PGM and Platinum Marks?

    https://www.liveabout.com/platinum-jewelry-information-2043747
    Aug 17, 2017 · Jewelry that contains at least 950 parts per thousand of pure platinum may be marked or described as "Platinum". Jewelry that contains 850, 900 or 950 parts per thousand of pure platinum may be marked "Plat" or "Pt" if a number is used in front of the term to disclose the amount of pure platinum in the mix, such as : "850 Plat" or "850 Pt", orEstimated Reading Time: 3 mins

What Are Some Identifying Marks on a Platinum Ring? LEAFtv

    https://www.leaf.tv/articles/what-are-some-identifying-marks-on-a-platinum-ring/
    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."

Antique and Vintage Jewelry Maker's Marks: A Collector’s Guide

    https://www.invaluable.com/blog/guide-to-jewelry-marks/
    Apr 06, 2020 · When considering platinum jewelry, the purity mark “950” denotes a composition of 95 percent platinum with a mix of other metal alloys, while “900” is made up of 90 percent platinum, and “850” has 85 percent platinum. Maker’s Marks

Identify gold, silver and platinum items SellYourGold

    https://www.sellyourgold.com/faq/my-items-gold-silver-or-platinum
    Hallmarks are also called assay or standard marking. Hallmarks are distinguishing characteristics that are stamped on gold, silver and platinum items - typically to identify the items purity. There are also hallmarks that can identify where the item was made (called a makers mark), the office the metal was tested in, the year, and the designer.

Platinum Estate Jewelry Information and Hallmarks

    https://www.tentwothree.com/platinum_jewelry_information.asp
    Many estate jewelry hallmarks will be PT900, indicating that the metal is 900 parts per 1000 of pure platinum. The remaining 100 part are usually made with iridium which makes the jewelry harder. 900 Plat - 100Irid - means platinum alloyed with 10% iridium. PT850 - platinum at 85% . Pt also the chemical symbol - mark for platinum. PLATINUM - indicating mainly platinum. Platine - French or Canadian mark . Dog's Head - French mark indicating platinum …

Simple Platinum Hallmark Guide - Gold-Traders (UK) Ltd

    https://www.gold-traders.co.uk/blog/simple-platinum-hallmark-guide/
    Mar 14, 2011 · Platinum hallmarking was introduced in the UK in 1975 as a result of legislation brought about by the Hallmarking Act of 1973. Prior to this date, items containing platinum would often carry no markings or simply ‘Plat’ or ‘Platinum’ and would be of varying purity. A typical platinum hallmark

Understanding Markings on Jewelry LoveToKnow

    https://jewelry.lovetoknow.com/about-jewelry/understanding-markings-jewelry
    You may notice the following metal stamps or markings on your jewelry: Marking. What It Means. A number, followed by "k" or "karat". The item is gold. The purity of the gold varies by the karat number, with "24k" being nearly solid gold and "10k" being 10/24 gold. "Gold-filled" or "GF". The piece is mostly made of base metal, but it has a sheet ...Author: Kate Miller-Wilson

Jewelry Makers Marks In Alphabetical Order - Photos ...

    http://www.amaterracrianza.com/jewelry-makers-marks-in-alphabetical-order/
    Nov 29, 2016 · Jewelry markings chart n how to read silver hallmarks steemit ask a specia what can the hallmark benjamin allen ue 1899 morning makers marks b replays and things Jewelry Makers Marks In Alphabetical Order BeautifulearthjaSilver Jewelry Marks Learn To Identify And DateHallmarks Maker S Marks Resource Antique JewelryJewelry Markings Chart…

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