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https://www.jewelrynotes.com/marks-18-karat-gold/
Parts-per-Thousand Marks for 18K Gold. “Parts per thousand” is a unit that is sometimes used instead of karats, especially in jewelry made in Europe. The difference is that instead of calculating purity per 24 parts of gold alloy, as in karat notation, it is calculated per 1000 parts. The common parts-per-thousand mark for 18K jewelry …
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 …
https://www.langantiques.com/university/hallmarks-on-period-jewelry/
From 1884 to present, golden jewelry objects can be of any alloy and usually carry only the maker’s mark and a purity mark. The purity mark can be a numerical in thousands as 585 for 14 karat gold or indicated in karats, like 18k or both combined into one mark. For silver jewelry, there are two standards, 800/1000 and 925/000.
https://goodjewelleryguide.com/jewelry-hallmarks-guide/
Jan 21, 2021 · The first requirement for all jewelry to be found on the market is to have these marks. There are some generally accepted rules and signs around the world. If you have gold jewelry, you should see markings like 18k, 14k, 10k, 750, 585, or 375. If you have silver jewelry, you should see markings like 925 or 800.
https://www.jewelry-auctioned.com/learn/jewelry-how-tos/how-to-understand-the-meaning-of-gold-hallmarks
Gold jewelry can vary from 24 Karat to 10 Karat Gold. In fact, 24 Karat Gold is considered 100 % pure gold, while 10 Karat is 41.6% pure gold. A piece of jewelry marked 18 Karat means that it is 75% fine gold. In fact, 24 Karat Gold is 100%; it is essentially not the most attractive mark in jewelry, because pure gold is too elastic.
https://truval.com/blog/jewelry-identification-marks-hallmarks-makers-marks/
Jewelry Makers Marks Silver. Much like gold jewelry maintains a relatively straightforward identification process for karat content, so does silver. Sterling silver, for instance, will have a mark of ‘925.’. This signifies that the piece of jewelry maintains a silver content of no less than 92.5% silver. back to blog.
https://www.langantiques.com/university/makers-marks-2/
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 narrow down your results. Using the Dropdown Pick Lists Below: Select your preferences from the three categories below.
https://www.globalgemology.com/a.html
Information: A.J. Goldfarb, Inc. is a manufacturer of jewelry findings that was founded in 1949, in New York City. Works in gold, silver, and base metals. Information: A. Jaffe, Inc. was founded in 1892 by Albert Jaffe, in New York City. Works primarily in gold and platinum.
http://www.amaterracrianza.com/jewelry-makers-marks-in-alphabetical-order/
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http://www.art-amerindien.com/hallmarks/
Indian Native American Jewelry Artists. Hallmarks & SouthWest Shop Trademarks. Welcome to my website ! 4000 hallmarks pictured at this date: 2021-03-1. Your help, corrections and suggestions will be greatly appreciated. Feel free to contact me: Alain, [email protected].
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