Green Tourmaline

Green Tourmaline is a common variety of tourmaline. However, emerald-green tourmaline is the rarest, most valuable, and prized variety. It is interesting to know that until the 18^th century, it was confused with emerald. Yellow-green tourmaline occurs in large quantities at various locations.

Occurrence

Emerald-green stones are found in Pakistan, Afghanista, Tanzania, Brazil, and Namibia.

Green Tourmaline Properties

• Specific Gravity: 3.06
• Refractive Index: 1.62-1.64
• Birefringence (DR): 0.018
• Luster: Vitreous
• Crystal Structure: Trigonal
• Composition: Complex borosilicate
• Hardness: 7½

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Crystals Directory

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

A

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

W

Y

Z

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Birthstone

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