Ratnapura Rd, Rakwana, Sri Lanka

[email protected]

+94 76 62 944 53

Login

Tag: extremely rare mineral

extremely rare mineral

Showing the single result

Sold out! $Grandidierite is an extremely rare mineral and gem that was first discovered in 1902 in southern Madagascar. Optical properties: Biaxial (-) Category: Nesosilicate Formula: (Mg,Fe2+)Al3(BO3)(SiO4)O2 Crystal system: Orthorhombic Color: Bluish green Dispersion: strong Hardness: 7 to 7.5 Refractive Index: 1.590 to 1.623 Grandidierite have been found in only a few locations around the world, including Malawi, Namibia and Sri Lanka and few gem quality specimens have come mainly from Madagascar.$
Rare Grandidierite Specimen

Add To Cart