• Hardness

  7.5.

• Occurrence

  Sri Lanka (Ceylon), Thailand, Myanmar (Burma), Cambodia, Vietnam, Kampuchea, Australia, Brazil, Nigeria, Tanzania and France. Zircon and turquoise are the birthstones of the month of December.

• Appearance

  Zircon, a naturally occurring gemstone, has colorless, yellow, orange, red, blue, brown and green varieties. Zircon, by it's name, is sometimes confused with cubic zirconia ("CZ"), which is synthetic. In addition, both have been used as diamond substitutes. Zircon has a high refractive index which is responsible for it's diamond like appearance. Zircon can be distinguished from diamond by it's double refraction and by wear and tear of it's edges, as compared to diamond which is very much harder.

• Enhancements

  Green and brown colors of zircon are not enhanced. Yellow zircon is rarely heat treated to improve color. Blue, red and colorless are always heat treated brownish crystals to produce these colors.

  More information on gemstone enhancements.

• Item #ZIR101
  	0.32 ct.
  	3.8mm Round Cut
  	Light
  	Strong Greenish Blue
  	Loupe Clean
  	[H] Heated to improve color.
  	one of a kind
  Blue Zircon	$ 24.99/pair

• Item #ZIR146
  	0.12 ct.
  	2.5mm Round Cut
  	Light
  	Vivid Slightly Bluish Green
  	Loupe Clean
  	[H] Heated to improve color.
  	one of a kind
  Blue Zircon	$ 24.99

• Item #ZIR134
  	0.86 ct.
  	5.2mm Round Brilliant Cut
  	Medium
  	Vivid Very Strongly Greenish Blue
  	Loupe Clean
  	[H] Heated to improve color.
  	one of a kind
  Blue Zircon	$ 44.99/pair

• Item #ZIR133
  	8.49 ct. total
  	9.7x7.7mm Oval Cut
  	Medium
  	Vivid Very Strongly Greenish Blue
  	Loupe Clean
  	[H] Heated to improve color.
  	only one pair available
  Zircon	$ 1,384.99/pair

• Item #ZIR166
  	0.83 ct.
  	5.5x4.3mm Oval Cut
  	Light
  	Vivid Slightly Bluish Green
  	Very Slightly Included
  	[H] Heated to improve color.
  	one of a kind
  Blue Zircon	$ 24.99

• Item #ZIR168
  	0.87 ct.
  	5.8x4.4mm Oval Cut
  	Light
  	Vivid Slightly Bluish Green
  	Very Slightly Included
  	[H] Heated to improve color.
  	one of a kind
  Blue Zircon	$ 24.99

• Item #ZIR170
  	0.74 ct.
  	5.6x4.3mm Oval Cut
  	Light
  	Vivid Slightly Bluish Green
  	Very Very Slightly Included
  	[H] Heated to improve color.
  	one of a kind
  Blue Zircon	$ 24.99

• Item #ZIR171
  	0.81 ct.
  	6.0x4.1mm Oval Cut
  	Light
  	Vivid Slightly Bluish Green
  	Very Slightly Included
  	[H] Heated to improve color.
  	one of a kind
  Blue Zircon	$ 24.99

• Item #ZIR174
  	0.99 ct.
  	5.5x4.3mm Oval Cut
  	Light
  	Vivid Slightly Bluish Green
  	Very Very Slightly Included
  	[H] Heated to improve color.
  	one of a kind
  Blue Zircon	$ 29.99

• Item #ZIR180
  	0.97 ct.
  	6.2x4.4mm Oval Cut
  	Light
  	Vivid Slightly Bluish Green
  	Very Very Slightly Included
  	[H] Heated to improve color.
  	one of a kind
  Blue Zircon	$ 29.99

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 Blue Zircon, Clean, medium dark, slightly greenish-blue, good cut.

Zircon		Quality	AA
Shape	Size	Avg. Weight	Price Each
Round	1.5mm	0.025	$ 7
	1.75mm	0.04	$ 9
	2mm	0.06	$ 10
	2.25mm	0.09	$ 13
	2.5mm	0.12	$ 15
	2.75mm	0.14	$ 19
	3mm	0.17	$ 20
	3.5mm	0.27	$ 31
	3.75mm	0.30	$ 35
	4mm	0.40	$ 44
	4.5mm	0.53	$ 58
	5mm	0.72	$ 81
	5.5mm	0.95	$ 117
	6mm	1.20	$ 142
Oval	5x3mm	0.37	$ 30
	6x4mm	0.75	$ 56
	7x5mm	1.28	$ 103
	8x6mm	2.00	$ 225
	9x7mm	3.00	$ 372
Pear	5x3mm	0.32	$ 26
	6x4mm	0.65	$ 49
	7x5mm	1.05	$ 86
Marquise	4x2mm	0.13	$ 14
	5x2.5mm	0.24	$ 20
	6x3mm	0.36	$ 29
	7x3.5mm	0.57	$ 63
	8x4mm	0.85	$ 88
Emerald	5x3mm	0.45	$ 41
	6x4mm	0.90	$ 84

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Last updated April 2, 2012
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