TOURMALINE

Mohs Scale Hardness

Specific Gravity

Birefringence

Refractive Index

7.0 - 7.5

3.02 - 3.26

0.014 - 0.021

1.62 - 1.64

ABOUT RIGHT GEMS

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29th Floor, Room #29-01, 919/362 Jewelry Trade Center, Silom Road, Bangkok, Thailand, 10500

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