Africa Gem Gallery Africa

Green Tourmaline Gemstones

Gem Gallery Africa - Image 15
One of the most popular gemstones of recent times, tourmaline is a wonderful gemstone that has many excellent properties. It occurs in almost every color imaginable, sometimes even with multiple colors in the same stone! Because of this huge variation in color it was often previously confused with other gems such as emerald and ruby. A wide variety of trace elements in the stone (such as manganese, iron and copper) are what cause the amazing range of colors. Most gem tourmaline is of the variety called elbaite. Major African sources for tourmaline include Mozambique, Zambia, Nigeria and Namibia. There are smaller deposits in Tanzania and Madagascar. Most of the individual sources produce stones of various colors. Green tourmaline is one of the more frequently occurring colors of tourmaline as well as one of the most popular. It varies from pastel mint green to an intense bluish-green that resembles emerald. The most valuable green tourmalines are light or medium toned because they have the most brilliance. Very dark greens are quite inexpensive. Stones that have a blue overtone are more valuable than regular greens and olive stones. Tourmaline has a very good hardness of 7.5, making it great for all jewelry applications. Because the gem often forms as long slender crystals, the most common cuts for tourmaline are rectangles and emerald cuts. Tourmaline is sometimes heat-treated to improve the color. This treatment is permanent and undetectable and has no effect on value or durability. Tourmaline is the birthstone for October, along with opal.

Ref No: GRTm0017

Weight: 3.36ct

Price: USD 604.00

Size: 13.7 x 6.1 x 4.3

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Ref No: GRTm0018

Weight: 3.59ct

Price: USD 646.00

Size: 9.2 x 6.0

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Ref No: GRTm0019

Weight: 4.86ct

Price: USD 486.00

Size: 15.7 x 8.9 x 6.1

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Ref No: GRTm0020

Weight: 5.09ct

Price: USD 916.00

Size: 14.8 x 7.9 x 6.4

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Ref No: GRTm0021

Weight: 3.74ct

Price: USD 561.00

Size: 11.0 x 9.1 x 6.1

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Ref No: GRTm0022

Weight: 3.12ct

Price: USD 187.00

Size: 10.2 x 8.3 x 6.3

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Ref No: GRTm0023

Weight: 2.92ct

Price: USD 350.00

Size: 9.2 x 6.0

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Ref No: GRTm0024

Weight: 6.33ct

Price: USD 1,582.00

Size: 13.0 x 9.5 x 8.2

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Ref No: GRTm0025

Weight: 4.98ct

Price: USD 597.00

Size: 14.3 x 7.8 x 5.3

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Ref No: GRTm0026

Weight: 4.79ct (total)

Price: USD 574.00

Size: 13.3 x 5.1 x 4.2

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Ref No: GRTs0001

Weight: 2.83ct

Price: USD 113.00

Size: 13.0 x 5.5 x 4.1

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Ref No: GRTs0003

Weight: 2.13ct

Price: USD 127.00

Size: 12.0 x 6.6 x 4.5

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Ref No: GRTs0004

Weight: 0.85ct

Price: USD 51.00

Size: 7.2 x 5.1 x 3.7

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Ref No: GRTs0005

Weight: 1.68ct

Price: USD 84.00

Size: 8.5 x 5.5 x 4.6

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Ref No: GRTs0006

Weight: 1.43ct

Price: USD 85.00

Size: 8.0 x 6.1 x 4.6

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Ref No: GRTs0007

Weight: 2.05ct

Price: USD 123.00

Size: 9.1 x 7.2 x 5.0

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Ref No: GRTs0008

Weight: 1.44ct

Price: USD 100.00

Size: 7.2 x 5.2

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Ref No: GRTs0009

Weight: 2.24ct

Price: USD 156.00

Size: 10.2 x 6.2 x 4.7

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Ref No: GRTs0010

Weight: 1.56ct

Price: USD 156.00

Size: 8.7 x 5.7 x 4.0

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Ref No: GRTs0011

Weight: 2.04ct

Price: USD 142.00

Size: 9.2 x 7.2 x 5.3

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Ref No: GRTs0012

Weight: 1.08ct

Price: USD 86.00

Size: 6.5 x 4.5

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Ref No: GRTs0013

Weight: 1.51ct

Price: USD 90.00

Size: 6.9 x 4.7

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Ref No: GRTs0014

Weight: 1.44ct

Price: USD 216.00

Size: 7.0 x 4.7

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Ref No: GRTs0015

Weight: 2.32ct

Price: USD 185.00

Size: 10.0 x 5.9 x 4.6

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Ref No: GRTs0016

Weight: 2.27ct

Price: USD 158.00

Size: 7.6 x 5.6

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Ref No: GRTm0027

Weight: 3.31ct

Price: USD 827.00

Size: 12.8 x 6.3 x 4.8

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Ref No: GRT0028

Weight: 14.14ct

Price: USD 3,168.00

Size: 18.8 x 16.6 x 9.4

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