Dumorterite

Chemical Formula: AlAl 6 O 3 BSi 3 O 18
Color: Blue, Pink, Purple
Crystal System: Orthorhombic
Refractive Index: 1.67-1.72
Category:

Description

Dumortierite is a minor blue gemstone that usually forms as inclusion s in Quartz. Its most common color is blue or grayish-blue, though pink and purple colors are also known. Dumortierite’s durability, combined with a high hardness, would make this an ideal gemstone, but the lack of transparency and often dull luster limit its use.

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