By Transparency

Transparency depends on stone to stone. It is natural property of a stone. What we observed in most of the stones is, transparent stones are high in price. It is not fixed that a stone will only be transparent/translucent/opaque.  For example – Blue Sapphire comes in category of transparent stone but lower quality of sapphire comes semi clear and opaque also.

1. Transparent –
2. Translucent (semi transparent)
3. Opaque