AfricaGem 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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