Indicolite 7.70cts

TOURMALINE

 

Though tourmaline occurs in almost every color, blue tourmalines, also known as indicolites, are a rarity. Coloured by iron, indicolites can vary from light to deep blue and are on the higher end of the price scale due to their exclusivity.

Mohs Scale Hardness

7.0 - 7.5

Specific Gravity

3.02 - 3.26

Birefringence

0.014 - 0.021

Refractive Index

1.62 - 1.64