Discover how to overcome the hurdles of working with natural untreated gemstones, from sourcing to crafting and marketing, and embrace their unique beauty.
What is Spinel? - Everything You need to Know
Spinel has a hardness of 8 on the Mohs hardness scale, diamond has a hardness of 10, and ruby and sapphire have a hardness of 9. A specific gravity of 3.6 and a refractive index of 1.718. It is transparent to opaque and has a vitreous lustre.
Spinel i...