Most of the countries in the world, Sri Lanka is known as by their tea and gems. Throughout the history of Sri Lanka, this country known as “Ratna – Dweepa” this Sinhala name connotes the meaning “The Island of Gemstone”. Local and foreign chronicles and ancient reports attest to this name (Land od gemstone). Today Sri Lankan gems are the most popular goods among the Tourists. Tourists who visit Sri Lanka they are willing to buy Sri Lankan gems and jewelers. They are a preference to Sri Lankan gems. In Sri Lanka, there are 200 minerals have been classified as a gemstone. Their beauty, durability, rarity, and combination of these attributes which should be fulfilled make a mineral worthy of being classified as a gemstone. The main gemstone species found in Sri Lanka are Blue Sapphire, Ruby, Padparadscha, Yellow Sapphire, Asteriated Sapphires (Star Sapphires), Alexandrite, Spinel, Tourmaline, Beryl, Quartz, Moonstone, etc.