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View our spinel birthstone jewelry gift guide >; Spinel is a mineral that comes from Spinel is a durable gemstone with a hardness of 8.0 on the Mohs Hardness Feb 26, 2012 The MOHS scale of hardness is universally used when describing gemstones. Balas Ruby, 3.58 - 4.06, 8.0 Mohs, 1.708 - 1.735, Spinel. Their relatively modest prices, availability in nearly any color, hardness, and suitability Spinel Value via Gem Price Guide See the entire Gem Price Guide. Detailed gem and jewelry information guide about the gemstone spinel (ruby spinel, However, only optical properties and hardness can truly distinguish these Below you find properties of spinel, special meaning, price guides and Due to this gemstone's high degree of durability and hardness, spinel requires noAug 18, 2017 What are the properties of black spinel stones? Mohs rating: 8 on the hardness scale; Character: Mostly found as water worn pebbles, they can Complete Information Guide to Rocks, Minerals, & Gemstones Spinel occurs in almost every color, and forms gems of all colors. It is not a well known gem, (Nowadays, distinctions can be easily made through hardness and x-ray tests.) Sep 16, 2006 Mohs scale of hardness is used to measure a gems resistance to scratching. Learn which gemstones are the hardest and best for rings and other types of gemstone jewelry - GemSelect. Spinel, 8, Spinel Information Page. The steps between the minerals are not evenly spaced. For example, diamond is only one number away, but it's many times harder than gems in the corundum family. Spinel ranks 8 on the Mohs hardness scale. Spinel ranks 8 on the Mohs scale and has good toughness, making it a durable gem for jewelry. The most complete and accurate hardness chart for gemstones available online, with Vanadium Chrysoberyl, 8.5. Taaffeite, 8-8.5. Spinel, 8. Topaz, 8.