Amethyst is a variety of quartz, if the color of the amethyst possesses a touch of lavender or if it is light lilac and slightly grayish, it is classified as pink amethyst.
Amethyst Treatments:-
Heat treatment between 878 - 1382 degrees F (470 - 750 degrees C) produces light yellow, red-brown, green, or colorless varieties. The original color an be restored by X-ray radiation. - Gemstones of the world, Walter Schumann, 2001, p 118 .
Significant Gem Localities:-
Large producers of Amethysts are in Siberia, Afghanistan, Bolivia, Burma (Myanmar), Cambodia, Canada, India, Kenya, Madagascar, Mexico, Namibia, Nigeria, Peru, Russia, Uruguay, USA, Sri Lanka, Brazil and the Far East.
7 on the Moh's Scale
WEIGHT PER PIECE OF AMETHYST
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OVAL SHAPE
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OCTAGON SHAPE
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PEAR SHAPE
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ROUND SHAPE
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SQUARE SHAPE
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SIZE
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WEIGHT
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SIZE
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WEIGHT
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SIZE
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WEIGHT
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SIZE
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WEIGHT
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SIZE
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WEIGHT
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5*3MM
|
0.23
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5*3MM
|
0.33
|
5*3MM
|
0.21
|
3MM
|
0.11
|
3*3MM
|
0.15
|
5*4MM
|
0.33
|
6*4MM
|
0.57
|
6*4MM
|
0.4
|
4MM
|
0.22
|
4*4MM
|
0.35
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6*4MM
|
0.45
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7*5MM
|
0.95
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7*5MM
|
0.61
|
5MM
|
0.46
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5*5MM
|
0.66
|
7*5MM
|
0.75
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8*6MM
|
1.6
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8*5MM
|
0.95
|
6MM
|
0.8
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6*6MM
|
1
|
8*6MM
|
1.18
|
9*7MM
|
2.15
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8*6MM
|
1.16
|
7MM
|
1.25
|
7*7MM
|
1.75
|
9*7MM
|
1.65
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10*8MM
|
2.9
|
9*6MM
|
1.3
|
8MM
|
2
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8*8MM
|
2.7
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10*8MM
|
2.46
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11*9MM
|
4.1
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10*7MM
|
1.75
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9MM
|
2.25
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10*10MM
|
4.05
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11*9MM
|
2.97
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12*10MM
|
5.5
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12*8MM
|
2.52
|
10MM
|
2.87
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12*10MM
|
3.76
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14*10MM
|
7.1
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14*10MM
|
5.05
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