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https://www.leaf.tv/articles/what-does-pt-stand-for-on-a-gold-chain/
Pure gold is referred to as 24-karat gold, and precious gold jewelry is stamped with the letter "k" preceded by a number to indicate the amount of gold it contains. Sterling silver jewelry is often stamped with the number .925, meaning that it is 92.5 percent pure silver. If the jewelry is marked "PL," "PLAT" or "PT…
https://www.jewelrynotes.com/marks-18-karat-gold/
The common parts-per-thousand mark for 18K jewelry is 750. You might notice that this number is equal to the percentage equivalent of 18 karats (75%) multiplied by 10. In general, to convert a parts-per-thousand number to karats, divide by 1000 and multiply by 24. Marks for 18K …
https://www.leaf.tv/articles/what-are-the-marks-for-18-kt-gold/
The 18K mark is used in the U.S. and Japan. In Europe, 18 karat gold is marked 750, in reference to it being 75 percent pure. Under the percentage system, 10 karat gold is marked 417, 14 karat is marked 583, 22 karat is marked 916, and 24 karat is marked 100. Both the karat and percentage marks …
https://www.invaluable.com/blog/guide-to-jewelry-marks/
Apr 06, 2020 · A piece of jewelry with an etching that reads “18k” or “750” indicates that it is made up of 75 percent gold, while a “14k” or “585” mark indicates the metal is constructed with 58.5 percent gold. Detail of maker’s marks on an Italian 18K yellow and rose gold bracelet, mid 20th century.
https://www.antique-jewelry-investor.com/clear-images-of-the-awc-hallmark-query-comments.html
A crown mark was used in place of the lion passant for 18 ct gold, until 1844 when the crown mark was used for 18 ct 9 carat gold was still used during this period but remained unmarked. In 1854, THREE lower standards were introduced. 15, 12, and 9 carats which had until that year, no standard mark, other than the carat and it's decimal value.
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…
https://www.gold-traders.co.uk/blog/simple-platinum-hallmark-guide/
Mar 14, 2011 · Simple Platinum Hallmark Guide. 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. All platinum items weighing more than 0 ...
https://worldeccentricitycharm.com/blogs/news/costume-jewelry-hallmarks-a-to-z
Costume Jewelry Hallmarks: A to Z Posted by Laurie Zeiden on Sep 06, 2018 My blog series, Costume Jewelry Hallmarks , is an ongoing project to catalog costume jewelry hallmarks.
https://www.langantiques.com/university/makers-marks-2/
Describe the Cartouche, Frame or Shape – Examples: circle or triangle. Words, single letters or monograms – Example: ORANGE BLOSSOM or A. City or country where a Maker worked or originated (this information is not usually contained within the mark but it’s something you may know or intuit based on other marks) Keep adding information to ...
https://abbreviations.yourdictionary.com/articles/list-of-standard-jewelry-abbreviations-with-meanings.html
Standard Jewelry Abbreviations for Metals. Jewelry can be made from a variety of metals, including gold, silver, and platinum. Each piece is stamped to mark its metal content, and you can also use the abbreviation to tell if the piece is plated or solid.
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