Gemmological Properties of Ammolite

TECHNICAL  DATA

ammolite collageMineral Type: Aragonite

Chemical Composition:  Calcium Carbonate with 3 to 4% trace minerals

Refractive Index: 1.52 to 1.67

Specific Gravity: 2.8 to 3.05

Hardness: 4 to 4.5
Spinel Cap Hardness: 8

Crystal Structure: Orthorhombic.

Cleavage: Pinacoidal.

Luster: Vitreous to Resinous

Care and Maintenance:
Clean with mild soap and water, or a commercial pearl cleaner. Ultrasonic cleaners should be avoided. The lightly acid solution used in them can attack the surface of a natural stone, and stress the layers in a triplet. Steam cleaning should also be avoided. With proper care, an ammolite stone will last indefinitely.