The number markings on precious gold fashion jewelry are a bit of confusion to lots of people. We are usually utilized to seeing a karat or silver mark like this: 10K, 14K, 18K, Sterling, and so on. The numbers suggest the very same thing. For 14k the number is technically 583 but most producers embraced the European way and make 14k gold a little bit over 14k, so the mark is 585 in a lot of 14k jewelry. 18K is significant 750. If the mark is legitimate and there is a makers mark likewise in the jewelry , the number implies these products are 18k gold. For 18k gold, there are 18 parts of pure gold mixed with other metals to make the metal suitable for usage in fashion jewelry. 18 parts pure gold divided by 24, or 18/24 equals 750. The precious jewelry is 75% pure gold, 750 parts gold with 250 parts other metals out of "1000" parts. Sterling silver is marked 925. Sterling is 92.5% pure silver and the rest is other metal, usually copper.
What does it imply if the ring marked 14K PR? The 14K just suggests it is 14K (Karat) gold and since of the K indicates it would have been made in either South East Asia or The United States. The PR marks are simply the Maker or Store ID or perhaps a design mark, and have no significance to the Worth. The basic decimal formula to work out the quality of gold material is quite easy, as they are all measured in 'Parts per Thousand.' This suggests that 9ct gold is computed like this: 9 (for 9ct) is divided by pure gold (24) and then increased by 1000 (for pure gold as a decimal). ie: 9/24 * 1000= 375 That 375 is the decimal quality for 9ct gold and is in some cases shown with a decimal point in front -.375 The old Victorian standard of 15ct gold is computed the very same way - 15/24 * 1000 = 625 (Not quite the numbers you have on your precious jewelry. Dental gold is 16ct or 666 repeating. In your case we can utilize 698/1000 * 24 = almost 17ct
I have a platinum engagement ring and found a wedding event ring that I really like however the band is made of palladium. Is it safe to use these 2 metals together without one harming the other? It will use the softer metal IN TIME but that might take several years. costume jewelry deteriorated the band of her engagement ring but it took control of twenty years to do. Platinum and Palladium and rather good together but I would take the recommendations of your regional friendly jeweler and have them inspect both rings. In some cases the Platinum might be a lower grade in order to make it harder - so have actually that checked.