14K Real Gold Diamond Heart C Pendant Charm 17094
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The number markings on precious gold jewelry are a bit of confusedness to lots of people. We are in general employed to seeing a karat or silver mark like this: 10K, 14K, 18K, Sterling, etc. The numbers mean the same thing. For 14k the number is technically 583 but most manufacturers adopted the European way and make 14k gold a tiny bit over 14k, so the mark is 585 in most 14k jewelry. 18K is marked 750. If the mark is valid and there is a manufacturers mark likewise in the jewelry, the number means these items are 18k gold. Here is where the numbers come from. Pure gold is called 24 karat. For 18k gold, there are 18 constituents of pure gold mixed with other metals to make the metal suitable for use in jewelry. 24k is too soft alone to stand up or to hold stones well. 18 elements pure gold divided by 24, or 18/24 equals 750. That is where the number comes from. The jewelry is 75% pure gold, 750 elements gold with 250 elements other metals out of “1000″ parts. It is more comfortable to think of it as a percent which is pure gold in the recipe. Sterling silver is marked 925. Sterling is 92.5% pure silver and the rest is other metal, in general copper. The basic decimal formula to work out the quality of gold content is rather simple, as they are all measured in ‘Parts per Thousand.’ This means that 9ct gold is calculated like this: 9 (for 9ct) is separated by pure gold (24) and then multiplied by 1000 (for pure gold as a decimal). ie: 9/24*1000=375 That 375 is the decimal quality for 9ct gold and is at times shown with a decimal point in front – .375 The old Victorian usual of 15ct gold is calculated the same way – 15/24*1000 = 625 (Not rather the numbers you have on your jewelry. Dental gold is 16ct or 666 recurring. But you may also reverse this formula by starting with the decimal and working back. ie: 375/1000*24 = 9 In your case we may use 698/1000*24 = almost 17ct It will wear the softer metal OVER TIME but that could take a lot of years. My Grandmothers wedding ring in the long run wore away the band of her engagement ring but it took over 20 years to do. Platinum and Palladium and rather good together but I would take the counsel of your local friendly jeweler and have them check both rings. Sometimes the Platinum may be a lower grade in order to make it harder – so have that checked.
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