Ruby other rubies of similar quality. After color follows clarity: similar to diamonds, a clear stone will command a premium, but a ruby without any needle-like rutile inclusions may indicate that the stone has been treated. Ruby is the traditional birthstone for July and is usually more pink than garnet, although some rhodolite garnets have a similar pinkish hue to most rubies. The world's most valuable ruby is the Sunrise Ruby. Rubies have a hardness of 9.0 on the Mohs scale of mineral hardness. Among the natural gems only moissanite and diamond are harder, with diamond having a Mohs hardness of
Gemstone industry in Greenland high northern latitudes, acquired the Fiskenaesset property from Brereton and Anderson and identified the Greenland Ruby as an important coloured gemstone occurrence. The company was motivated by the success of their competitors in the Canadian diamond fields beginning in 1991. True North Gems hired local residents from Qeqertarsuatsiaat and Nuuk, the capital of Greenland, to help explore the district and, over the course of the next three years, increased the number of ruby occurrences known from six to twenty nine. They bulk sampled the main deposits. True North Gems paid for Canadian gem and jewelry experts to come to the