Tanzanian Mahenge Cobolt Spinel - Oval - 2.50ct

Cobolt blue spinels are one of the rarest naturally occurring blue gemstones on Earth. They are coloured by the element cobolt within the crystal lattice of the spinel and collector-grade gems over one carat are considered extremely rare.

This cobolt spinel is an exceptional gemstone in colour, size and clarity and will make a fine addition to any collection or display. Quite a special spinel!

• #253551

• Cobolt Spinel

• Mahenge, Tanzania

• Oval

• Untreated

• Very Very Slightly Included

• 2.5 Carats

• 10.3x7.4x4.6mm

• Certificate