Spinel from Tanzania
Size-
3.6cm x 2.8cm x 2.3cm
Weight-
30g
You will receive the item in the photo
Spinel is a durable,highly coveted mineral prized for its colours. It features a cubic (isometric) crystal system. Belongs to the oxide mineral class and scores a high 8 on the MOHs hardness scale. It typically forms in contact metamorphosed limestone,schists and specific igneous rocks.al
Spinel is primary high temperature mineral and can be found in several distinct geologic environments.
Metamorphic rocks- most fine gem quality spinels form in regionally and contact metamorphosed limestone and silica poor schists.
Igneous rocks- it occurs as an accessory mineral in rare silica deficient and alkali poor mafic and ultramafic rocks.
Because spinel and s dense,hard and highly resistant they weathering it frequently washes out of its primary host rock and accumulates in gem stone gravels.