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 to uphold their constitutional claim to traditional rights under section 32 of the mineral act and in doing so create the opportunity for responsible small scale mining to take place. Gemstone industry in Greenland Gemstones have been found in Greenland, including diamond, ruby, sapphire, kornerupine, tugtupite, lapis lazuli, amazonite, peridot, quartz, spinel, topaz, and tourmaline. Most of Greenland's ruby and sapphire occurrences are located near the village of Fiskenaesset/Qeqertarsuatsiaat on the southwest coast. A total of 31 ruby and sapphire occurrences have been confirmed in the Fiskenaesset/Qeqertarsuatsiaat district. One of these occurrences, Aappaluttoq, is being developed for a potential mining