GTS-Gem Track SystemTm
Introduction to Colored Gemstones Coloured gemstones are minerals that draw their appeal from color, optical effects, and sheer rarity. Although diamonds may be highly recognized, colored gemstones range extensively and diversely, with species such as sapphires, rubies, emeralds, to mention a few out of many, many more. The knowledge of the various species of gemstones is an important way in