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www.reference.com/beauty-fashion/585-stamped-jewelry-a7ed...

The number 585 is stamped on European gold jewelry to indicate that the jewelry contains 58.5 percent gold. This is comparable to the U.S. 14K marking that indicates that a piece contains 14 parts gold and 10 parts of one or more different metals, which means that it is 58.3 percent gold.

bellatory.com/.../750-585-417-gold-markings-jewelry

Well, that covers the meanings of 750, 585, 417, and other gold markings on jewelry. Most fine gold jewelry is clearly marked or stamped. In which case it will display one of the markings discussed here. Some jewelry is marked with something else, instead of, or in addition to, those mentioned above. Gold Plated Jewelry Markings

www.reference.com/beauty-fashion/585-mean-jewelry-7f2aaf85...

What Does "585" Mean on Jewelry? On jewelry, "585" is a measure of gold's purity and indicates that the piece is made from 14-karat gold. This number is derived from the percentage of pure gold expressed as parts per 1,000.

jewelrywiseblog.com/how-to-tell-if-your-jewelry-is-really-gold

One of the easiest ways to tell if a piece of jewelry is gold or not is to look for a stamp (10K, 14K, 18K, 22K, 24K). In a perfect world, all gold jewelry is marked with a big, bright 14K stamp. In the real world, there are hard-to-read stamps, stamps that mean gold-plated, stamps that are fake…and the list goes on.

antiquesilver.org/750-585-417-markings-gold-jewelry-mean

What Do the 750, 585, and 417 Markings on Gold Jewelry Mean? Posted on August 23, 2017 January 25, ... Round that up to .417, and you’ll find a number you often see stamped on gold. Common Markings. So if the 417 gold markings on your jewelry indicate 10 carats, what do the other common markings indicate?

www.raregoldjewelry.com/guide-stamps-inscriptions-gold-jewelry

A lot of jewelry will have several stamps or marks. Often there is one stamp to indicate the purity of the gold (“14K”, as mentioned above). The purity mark can be accompanied by a second mark called a maker’s mark or a jeweller’s stamp. These are custom stamps or engravings placed in jewelry by whomever manufactured it.

www.answers.com/Q/What_does_TJ_585_stamp_mean_on_jewelry

Answer . On a gold ring the stamp 585 is meant to indicate that it is 58.5%, or 14 karat gold. However, I urge anyone wishing to buy jewelry to be very careful when judging gold by the marking.

www.answers.com/Q/What_jewelry_manufacturers_used_the_stamp_585_on...

Pure gold content is often represented in decimal %'s for example 14 karat is represented as .585 [14 / 24 = .585]. In the case of 14k 58.5% of the jewelry stamped is pure gold [ 24k ].

oureverydaylife.com/what-does-585-mean-on-gold-12573216.html

Millesimal fineness marks are rounded to three figures. The number 585 refers to the parts per thousand of gold by mass in an alloy. This means an item marked 585 is 58.5 percent gold. If the item is 585 parts gold, 415 parts are made up of another metal or other metals. Gold marked 585 is the equivalent of 14-karat gold in the U.S.

ericthejewel.com/is-my-gold-jewelry-fake-know-before-you-try-to-sell

The first clue to the nature of the gold jewelry you are looking at is the jewelry stamp or hallmark. Gold stamps can be forged, but most often the stamps are true. If you gold jewelry has a stamp that says 14k, .585, .583 (all indicating 14 karat gold), 18k, or .750 (both indicating 18 karat gold) then you know that it is high quality gold.