Display properties include color, brilliance, fire and luster. The most noticeable are however the display properties. Specific gravity is also a widely used physical property parameter of sapphire. Mohs hardness scale is used to measure the scratch resistance of the gemstones. The principal physical property of a sapphire is the hardness. Physical properties and display properties. The type of the sapphire depend on two primary factors. Types and Colors of Sapphire Found in Sri LankaĪnyone who wishes to purchase a Ceylon gemstone must at least know the available pool of variants before making a choice. The amount of sapphire and the pace at which they are been found in this tiny island is quite fascinating. Sri Lankan gem miners still use the traditional techniques to extract raw gems out of the earth’s crust.

The unusual double star sapphire is currently lying at the America Museum of National History in New York. The biggest gem in the world known as ‘Star of India’ that weigh 563 carats was actually found in Sri Lanka. The’ Gem Triangle’ is where gems are mostly been found.

Natural yellow sapphire