Crystal Larimar

Chemical Formula

NaCa₂Si₃O₈(OH)

Color

Blue, Green, Multicolored

Hardness

4.5 - 5

Crystal System

Triclinic

Refractive Index

1.59 - 1.65

SG

2.7 - 2.9

Transparency

Translucent to opaque

Double Refraction

0.038

Luster

Silky

Cleavage

2,2

Mineral Class

Pectolite