• 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.

• Diamond Gemstone Family

  •  Diamond
  •  Black Diamond

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

Calibrated Gemstones
Calibrated Gemstones by Shape

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	0.9mm	0.0044	$ 2
	1mm	0.0054	$ 3
	1.1mm	0.0067	$ 3
	1.2mm	0.0077	$ 4
	1.3mm	0.0115	$ 6
	1.4mm	0.0136	$ 7
	1.5mm	0.0166	$ 8
	1.7mm	0.0228	$ 11
	1.8mm	0.0273	$ 11
	1.9mm	0.0321	$ 12
	2mm	0.0369	$ 13
	2.1mm	0.0428	$ 16
	2.2mm	0.0499	$ 19
	2.3mm	0.0596	$ 20
	2.4mm	0.0636	$ 23
	2.5mm	0.0733	$ 26
	2.6mm	0.0826	$ 29
	2.7mm	0.0912	$ 32
	2.8mm	0.10	$ 38
	2.9mm	0.13	$ 41
	3mm	0.13	$ 44
	3.1mm	0.13	$ 45
	3.2mm	0.14	$ 47
	3.3mm	0.16	$ 54
	3.5mm	0.20	$ 338
	4mm	0.25	$ 360
	4.25mm	0.33	$ 428
	4.5mm	0.41	$ 450
	5mm	0.55	$ 473
	5.5mm	0.75	$ 525
	6mm	1.05	$ 615

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Last updated April 2, 2012
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