• Hardness

  10.0.

• Occurrence

  Worldwide, most notable locations are Australia, Africa, Brazil, Russia, India and most recently, Northern Canada. Diamond is the birthstone for the month of April.

• Appearance

  Black Opaque

• Enhancements

  Diamond is occasionally to commonly laser drilled to improve appearance. Surface cavities or fractures are occasionally filled with a hardened surface. Colored diamonds are occasionally irradiated and/or heat treated to induce "fancy" colors.

  More information on gemstone enhancements.

• Black Diamond

  • Item #DIA163
    	0.24 ct.
    	3.9mm Round Cut
    	Black
    	Opaque
    	[N] Not enhanced.
    	Quantity Available: 4
    Black Diamond	$ 199.99

• Calibrated Black Diamond

  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.

  • AA Opaque, nice black color, good polish.

  Black Diamond		Quality	AA
  Shape	Size	Avg. Weight	Price Each
  Round Brilliant	1mm	0.01	$ 2
  	1.2mm	0.01	$ 3
  	1.3mm	0.01	$ 4
  	1.5mm	0.01	$ 5
  	1.7mm	0.02	$ 7
  	1.85mm	0.03	$ 9
  	2mm	0.03	$ 11
  	2.2mm	0.04	$ 14
  	2.4mm	0.05	$ 17
  	2.5mm	0.06	$ 21
  	2.7mm	0.07	$ 24
  	2.8mm	0.08	$ 42
  	3mm	0.10	$ 52
  	3.2mm	0.12	$ 63
  	3.4mm	0.15	$ 95
  	3.8mm	0.20	$ 141
  	4.1mm	0.25	$ 203
  	4.4mm	0.33	$ 291
  	4.7mm	0.37	$ 367
  	5.2mm	0.50	$ 585
  	5.5mm	0.62	$ 726
  	5.8mm	0.75	$ 932
  	6.5mm	1.00	$ 1,530

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Last updated December 7, 2007
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