• 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.

• Zircon

  • 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 Zircon

  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 Brilliant	1.5mm	0.02	$ 6
  	1.75mm	0.03	$ 9
  	2mm	0.04	$ 9
  	2.25mm	0.06	$ 12
  	2.5mm	0.08	$ 14
  	2.75mm	0.10	$ 18
  	3mm	0.13	$ 19
  	3.5mm	0.21	$ 29
  	3.75mm	0.26	$ 33
  	4mm	0.32	$ 42
  	4.5mm	0.45	$ 56
  	5mm	0.63	$ 80
  	5.5mm	0.83	$ 120
  	6mm	1.07	$ 150
  Oval	5x3mm	0.33	$ 28
  	6x4mm	0.67	$ 54
  	7x5mm	1.32	$ 104
  	8x6mm	2.08	$ 258
  	9x7mm	3.29	$ 428
  Pear	5x3mm	0.27	$ 25
  	6x4mm	0.61	$ 47
  	7x5mm	1.00	$ 85
  Marquise	4x2mm	0.12	$ 13
  	5x2.5mm	0.21	$ 19
  	6x3mm	0.33	$ 28
  	7x3.5mm	0.51	$ 61
  	8x4mm	0.67	$ 87
  Emerald	5x3mm	0.33	$ 39
  	6x4mm	0.71	$ 83

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Last updated December 16, 2009
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