• Hardness

  7.0.

• Occurrence

  Madagascar, North America, Brazil, Myanmar (Burma), Africa, Siberia, Australia, Sri Lanka (Ceylon). Tourmaline and opal are the birthstones of the month of October. Tourmaline is the national gemstone of the United States.

• Appearance

  Yellowish green to bluish green in appearance.

• Enhancements

  Green and Blue tourmaline is commonly heat treated to improve color.

  More information on gemstone enhancements.

• Green Tourmaline

  • Item #TRM409
    	0.14 ct. total
    	2.5mm Round Cut
    	Very Dark
    	Strong Strongly Yellowish Green
    	Loupe Clean
    	[E] Routinely enhanced.
    	Quantity Available: 1 pairs
    Green Tourmaline	$ 89.99/pair

  • Item #TRM197
    	1.41 ct.
    	8.1x6.7mm Trillion Cut
    	Medium Light
    	Strong Yellow Green
    	Loupe Clean
    	[H] Heated to improve color.
    	one of a kind
    Green Tourmaline	$ 84.99

  • Item #TRM565
    	3.42 ct.
    	10.0x8.1mm Cabochon, Oval Cut
    	Medium
    	Slightly Brownish Yellow Green
    	Heavily Included
    	[H] Heated to improve color.
    	one of a kind
    Green Tourmaline	$ 104.99

  • Item #TRM248
    	3.23 ct.
    	12.6x6.6mm Rectangle Cut
    	Very Dark
    	Moderately Strong Strongly Yellowish Green
    	Loupe Clean
    	[H] Heated to improve color.
    	one of a kind
    Green Tourmaline	$ 159.99

  • Item #TRM508
    	4.30 ct.
    	14.5x6.9mm Emerald, Millenium Cut
    	Medium
    	Vivid Greenish Yellow
    	Slightly Included
    	[N] Not enhanced.
    	one of a kind
    Light Green Tourmaline	$ 214.99

• Calibrated Green Tourmaline

  Specify size, shape and quality when ordering. Prices are subject to change without notice. Actual carat weight may vary from the average carat weight listed.

  • AAA Eye clean to slight imperfections, light to medium yellowish green, good cut..
  • AA Eye clean to slight imperfections, medium yellowish green, good cut..
  • A Eye clean to slight imperfections, medium to dark yellowish green, good cut..

  Green Tourmaline		Quality	AAA	AA	A
  Shape	Size	Avg. Weight	Price Each
  Round	1.5mm	0.02			$ 6
  	2mm	0.03			$ 6
  	2.25mm	0.05			$ 6
  	2.5mm	0.07			$ 7
  	2.75mm	0.09			$ 7
  	3mm	0.12			$ 10
  	3.5mm	0.19	$ 27	$ 18	$ 15
  	3.75mm	0.23		$ 22	$ 18
  	4mm	0.26	$ 41	$ 27	$ 23
  	4.5mm	0.36	$ 62	$ 43	$ 33
  	5mm	0.48	$ 82	$ 58	$ 41
  	6mm	0.85			$ 100
  Oval	5x3mm	0.22	$ 35	$ 25	$ 23
  	6x4mm	0.43	$ 54	$ 38	$ 34
  	7x5mm	0.86	$ 84	$ 59	$ 53
  	8x6mm	1.36	$ 157	$ 113	$ 89
  	9x7mm	2.14			$ 159
  	10x8mm	2.70			$ 247
  	11x9mm	3.64			$ 384
  Pear	5x3mm	0.17	$ 32	$ 23	$ 21
  	6x4mm	0.40	$ 58	$ 41	$ 37
  	7x5mm	0.65	$ 85	$ 59	$ 55
  	8x5mm	0.87	$ 124	$ 96	$ 70
  Marquise	4x2mm	0.08	$ 15	$ 11	$ 9
  	5x2.5mm	0.14	$ 23	$ 17	$ 14
  	6x3mm	0.21	$ 44	$ 28	$ 24
  	8x4mm	0.43	$ 98	$ 76	$ 63
  	10x5mm	0.87			$ 113
  Emerald	5x3mm	0.22	$ 40	$ 27	$ 22
  	6x4mm	0.46	$ 81	$ 57	$ 46
  	7x5mm	0.86	$ 160	$ 110	$ 84
  	8x6mm	1.36		$ 228	$ 122
  	9x7mm	2.14			$ 214
  	10x8mm	2.61			$ 323
  	11x9mm	3.48			$ 509
  Square	3mm	0.18	$ 28	$ 22	$ 19
  	4mm	0.32	$ 69	$ 43	$ 36
  	5mm	0.62	$ 125	$ 85	$ 62
  	6mm	1.10	$ 193	$ 138	$ 103
  Heart	4mm	0.24		$ 28	$ 26
  	5mm	0.44	$ 73	$ 58	$ 52
  	6mm	0.69	$ 148	$ 74	$ 74
  Trillion	4mm	0.16	$ 36	$ 26
  	5mm	0.28		$ 58	$ 38
  	6mm	0.44	$ 129	$ 138	$ 62
  Straight Baguette	4x2mm	0.17			$ 10
  Cabochon, Round	3mm	0.22			$ 7
  	4mm	0.55			$ 16
  	5mm	0.60			$ 34
  	6mm	1.10			$ 56
  Cabochon, Oval	5x3mm	0.28			$ 16
  	6x4mm	0.53			$ 29
  	7x5mm	0.96			$ 47
  	8x6mm	1.44			$ 75
  Cabochon, Square	3mm	~			$ 7
  	4mm	~			$ 19
  	5mm	0.82			$ 37
  	6mm	1.41			$ 66

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Last updated June 23, 2008
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