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https://www.thenaturalsapphirecompany.com/education/precious-metal-standards-regulations-marks/platinum-standards-regulations/
According to current FTC guidelines, to be called “platinum,” jewelry must contain at least 500 parts per thousand of pure platinum, although most platinum jewelry sold in the U.S. contains at least 90 percent pure platinum. A platinum fineness mark.Estimated Reading Time: 3 mins
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
https://www.iso.org/standard/37050.html
The preferred platinum content of the alloys lies between 850 ‰ (parts per thousand) and 950 ‰ platinum. Platinum jewellery alloys can contain silver, indium, gallium, copper, cobalt, nickel, tin and ruthenium. The presence of these alloying elements has not been observed to interfere with the determination method.Category: w
https://www.iso.org/standard/57651.html
Abstract ISO 11494:2014 describes a method for the determination of platinum in platinum jewellery alloys, preferably within the range of fineness specified in ISO 9202, by means of inductively coupled plasma optical emission spectrometry (ICP-OES).Category: w
https://www.consumer.ftc.gov/articles/platinum-gold-and-silver-jewelry
Platinum Jewelry Platinum jewelry is rarely made with 100% pure platinum. Instead, platinum is mixed with similar metals or non-precious base metals. Generally, jewelry with a higher percentage of pure platinum is worth more.
https://www.wsj.com/articles/SB114973105810474493
Jun 08, 2006 · But many makers and sellers of platinum jewelry say pieces should not bear the word platinum if they are less than 85% platinum -- an international standard for purity -- …Is Accessible For Free: False
https://webstore.ansi.org/preview-pages/BSI/preview_30243490.pdf
Jewellery — Determination of platinum in platinum jewellery alloys — ICP-OES method using yttrium as internal standard element 1 Scope This International Standard describes a method for the determination of platinum in platinum jewellery alloys, preferably within the range of fineness specified in ISO 9202, by means of inductively coupled
https://www.business-standard.com/content/press-releases-ani/platinum-jewellery-styles-inspired-by-emmy-nominated-tv-shows-emily-in-paris-bridgerton-and-the-crown-121072201182_1.html
Jul 22, 2021 · Platinum jewellery is made of 95% pure platinum with minimum use of other ingredients - making it the finest metal available to us today. Naturally white, it is also one of the densest metals in jewellery & hence long-lasting.
https://www.malabargoldanddiamonds.com/platinum-jewellery.html
Platinum Jewellery. Diamond jewellery for party wear. Malabar Gold and Diamonds is a trusted name among the frequent jewellery buyers and the prospective customers who are planning a jewelry purchase in the days to come. In our day and age, it has become quite imperative that when we indulge ourselves in buying jewelry, we must purchase it from ...
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