Searching for Antique Platinum Jewelry Marks information? Follow the links below to find all the information you need and more.
https://www.leaf.tv/articles/what-are-some-identifying-marks-on-a-platinum-ring/
Hallmarks and maker's marks help identify the origin of antique and period platinum rings. Hallmarks, also known as quality or purity marks, guarantee the purity or quality of a precious metal. They are expressed with numbers, symbols, letters or a combination thereof stamped, impressed or struck on platinum …
https://www.tentwothree.com/platinum_jewelry_information.asp
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 used after 1912. PT950 - platinum. Indicating that 950 parts per 1000 containing platinum. After 1973, The Hallmarking Act was initiated, …
https://www.langantiques.com/university/jewelry-makers-mark/
Boucheron Maker’s Mark Maker’s marks are the initials or name of the manufacturing firm or other representative symbol stamped into a gold, silver or platinum item. Also called ‘Trademarks,’ they often provide the only evidence that a certain piece of jewelry has indeed been manufactured by a certain jewelry maker.
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", or
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.
https://www.langantiques.com/university/hallmarks-on-period-jewelry/
These three marks are the most prolific on French jewelry. The crab was used for articles made in the departments while the boar’s head was the mark of the Paris assay office. From 1912 a dog’s head is used as the mark for platinum.
https://truval.com/blog/jewelry-identification-marks/
Throughout history, these marks were etched into noble metals to certify their legitimacy, leaving little-to-no question as to where each piece had come from. Markings are typically found on items made of silver, gold, platinum, and though small in size, they have quite a serious impact on an item’s worth.
http://www.amaterracrianza.com/jewelry-makers-marks-in-alphabetical-order/
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