That works out to a mind-blowing $1.2 million per carat – no precious metal comes close to that value density. While platinum costs more by weight than gold, typically about 40% higher, finished platinum jewelry is pricier because it‘s denser. For example, a platinum ring uses much more raw material than the same design in 14k or 18k gold. With platinum trading at nearly $1,200, it stands to reason that you can make money by buying platinum items and platinum scrap and sending it to us to be recycled. You can also profit handsomely by buying up and recycling platinum jewelry. But what kinds of platinum jewelry should you be on the lookout for, and how much platinum do they contain? 18-Karat. This is made of 75% gold and 25% other metals. It has a high value but is weaker due to the high gold percentage. 14-Karat. The strongest option, this type of white gold is the cheapest due to its high percentage of other metals 14-Karat white gold is only about 58% gold. Further, white gold can be rhodium plated. Home Gemstones Aquamarine Value, Price, and Jewelry Information. By Joel E. Arem, Ph.D., FGA, Donald Clark, CSM IMG, International Gem Society. Named after the color of sea water, aquamarine is the blue to blue-green member of the beryl family. Readily available and moderately priced, the modern March birthstone makes an excellent jewelry stone. Rhodium is highly resistant to corrosion and tarnishing, which makes it a very attractive plating option for jewelry. With rhodium being a part of the platinum family, it is one of six metals that is extracted from platinum. The six metals are platinum, rhodium, osmium, iridium, ruthenium, and palladium. Rhodium gives your jewelry a shinier Date letters stamp is the mark indicating the date the vintage jewelry was manufactured. Town stamps indicate the place the jewelry was created. Sterling silver jewelry has various hallmarks depending on the country of origin. Some countries are easy to identify, while others have a more complex set of marks. Explore our collection of 2 carat diamond rings, designed with the precision and expert craftsmanship that makes Tiffany & Co. diamonds exceptional. Our 2 carat engagement rings are offered in an array of cuts to complement the beauty of each stone. 800 843 3269. There is no calculator that can do this for you. Tanzanite showing a noticeable green component will be worth significantly less. For richly colored AAA Tanzanite, 1ct is approximately worth $200-$350 per carat. 2ct sizes reach $400-$550 per carat. 3 carats and up will reach $500-$675 per carat. ISLWi.