This ring is made of a faceted 6 x 4 mm oval Montana blue sapphire set in a sterling silver setting. Size 7.Sapphire is a gem-quality type of corundum, and is the third-hardest mineral in the world at a 9 on the Mohs scale, following moissanite at 9.25 and diamond at 10. This durability is what makes sapphire so great to use in jewelry. It is found in all colors, including red, which is called ruby, though blue is the most well-known color. Sapphires are commonly heat-treated for color enhancement. It is one of the four precious gems, with ruby, diamond and emerald. Some sapphires even have color-change.Sapphire is the birthstone of September, and is a gemstone for representing the zodiacal sign Taurus. It has always symbolized truth, sincerity, and loyalty. No wonder it's a gemstone for the 45th and 65th wedding anniversaries! Sapphire is also one of the state gemstones of Montana.http://en.wikipedia.org/wiki/SapphireInsurance and tracking is included in the shipping price for US addresses on account of the item's value, but if you'd like insurance/tracking on international shipping, please contact me first. Rates will vary depending on your location.
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