Native American Sterling Silver Turquoise Coral Feathers Collar 925 Necklace 14 OS 0003. Sellers comments: 14 includes the chain. Metal: Solid Sterling Silver Metal Purity: 925 parts per 1000 Length: 14 inches Width: 9 mm Weight: 29.3 g. Total Carat Weight: 2.00 – 4.99 tcw. Are gemstones that are mined naturally from the earth and are not treated in any way to enhance color or clarity. Are gemstones created in labs and are identical to their natural counterparts in terms of chemical composition and physical properties. Are man made and resemble the appearance of a natural gemstone but have no chemical or physical properties. Any named gemstone listed except for diamonds should be considered Lab created unless it is listed specifically as being natural. All diamonds mentioned are 100% natural except for colored diamonds. Colored diamonds should be considered as being treated to enhance color. For semiprecious gemstone jewelry (Not diamonds). A high end thermal refracting gemstone tester is used to help determine what a gemstone might be. It does not guarantee 100% accuracy because some stones refract heat similar, but it narrows down the possibilities. I also try taking accurate pictures to help buyers determine what they believe a stone to be. The most commonly used semiprecious gemstones found in jewelry include: Amber, Garnet, Amethyst, Tanzanite, Topaz, Tourmaline, Spinel, Emerald, Moonstone, Opal, Sapphire, Iolite, Citrine, Aquamarine, Marcasite, Quartz and Ruby. Stones like Turquoise, Coral, Opal, Jasper, Onyx, Lapis, Sodalite, Larimar, Jasper, Agate and Malachite are commonly used in Native American, Southwestern and Mexican jewelry. A tester easily shows differences between a gemstone (Natural or Lab created) and colored glass but, it can not determine differences between Lab created and Natural stones. Millimeters to Inches 3mm is approximately 1/8 inch 6mm is approximately 1/4 inch 13mm is approximately 1/2 inch 19mm is approximately 3/4 inch 25mm is approximately 1 inch 50mm is approximately 2 inches 75mm is approximately 3 inches. We participate in eBays managed payments. Just wait for the invoice. We reserve the right to require Signature Confirmation. We can not mark items as gifts. How will it fit? How will it look? It is more important to us that you are happy rather then just making a sale. If you have any questions please contact me and I will happily help you. We are a business that mainly deals in precious metals located east of Pittsburgh Pa. It also allows them the opportunity to learn how to run and operate their own online business if they ever choose to. We are thankful you took the time to explore our store so come on in and have a look around. Hopefully you find something that dazzles you. Most questions can be answered by simply reading the information provided in the listings. For size references and conversions Google can be a very useful tool. If you cant find the answer to your question just ask and we will do our best to answer them immediately. Powered by SixBit’s eCommerce Solution.