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.
Source: Wikipedia — Gemstone industry in Greenland (CC BY-SA 4.0)