The figures of precious gold jewelry are a bit confused by many people. Usually we see a karat or silver mark: 10K, 14K, 18K, Sterling, etc. The numbers are the same.
For the 14k, the number is technically 583, but most manufacturers have accepted European and 14 k gold will be smaller than 14 k, so most of the 14 k jewels are 585. The 18K has a 750 mark. If the trademark is valid and the number of decision makers on jewelery is included, the number means that these items contain 18 carat gold.
Here the numbers come from. The pure gold is called 24 carats. 18 silver gold, 18 parts pure gold mixed with other metals, making the metal suitable for jewelery. The 24k is too soft to stand up or keep a good lap. 18 pieces of pure gold divided by 24 or 18/24 are equal to 750. This is where the number comes from. Jewelry is 75% pure gold, 750 gold and 250 parts other metals from the "1000" section. It's easier to think like a percentage of pure gold in the recipe.
The sterling silver is 925. The sterile 92.5% pure silver and the rest are other metals, usually copper.
What does the ring mean with 14K PR? 14K simply means that 14K (Karat) is gold, and for K it means that it would have been made in Southeast Asia or the United States. PR notations are just the Maker or Store ID or even a design sign and have no relevance to the value.
The basic tithing formula for the qualitative development of gold content is quite simple, as each one is for "Thousands of parts". This means that 9 cst gold is calculated as follows: 9 (9 cc) of pure gold (24) divided by 1000 (pure gold per decimal). ie: 9/24 * 1000 = 375 This 375 is the decimal grade for 9ct gold and sometimes with a decimal point – .375
The 15ct gold old Victorian standard is calculated in the same way – 15/24 * 1000 = 625 the number of jewelery, the dental gold is 16 or 666, but this formula can also be translated with decimals and backwards, ie: 375/1000 * 24 = 9
698/1000 * 24 = almost 17%
I have a platinum engagement ring, I found a wedding ring that I love, but the band is made of palladium. Is it safe to use both metal together without damaging the other?
The soft metal will be worn, but it can last for many years. The grandmother's wedding ring finally dragged on the engagement ring orchestra, but lasted for over 20 years.
Platinum and Palladium and very good together, but I would ask for a local friendly jeweler's advice and check them on both rings. Sometimes Platinum may be a lower grade to make it more difficult – so check it out.
Source by Victor Epand