How many precious stones are there?

Loose color gemstones. Photo credit Janna Semenova for Multicolour Gems) Of the more than 2000 identified natural minerals, fewer than 100 are used as gemstones and only 16 have achieved much importance. read more

However only 10 or 20 of these minerals are that well known. In fact many of the rarer gemstones are not used in jewellery. Some of these rarer stones are too soft for use in everyday jewellery; and a few of these rarer gemstones are in fact poisonous. read more

These terms are based on old traditions from the west. These days, all gemstones are considered precious since they are all rare and there is a limited supply of them. The traditional list of gemstones that are considered precious stones are: Diamond; Ruby; Sapphire; Emerald; All other gemstones are considered as being semi precious stones. read more

When gemstones are found in their natural state, they are quite ordinary looking. A good polish is required to bring out the shine, brilliance or sparkle. Amethyst at one time was considered a precious gemstone. read more