Garnet, Sri Lanka
Gemstones belonging to the family of Garnet occur in a multitude of colours except for blue and are available in several varieties including almandine, andradite, grossular, pyrope, spessartine and uvarovite. With the exception of andradite and uvarovite, all the other types of Garnets are available in Sri Lanka, with some displaying asterism, chatoyancy and a colour change when viewed under different types of lighting.
All garnets have essentially the same crystal structure, but they vary in chemical composition. There are more than twenty garnet categories, called species, but only five are commercially important as gems. Garnet types found in Sri Lanka with commercial value include;