• Hardness

  5.5 - 6.5.

• Occurrence

  Australia, former Czechoslovakia, U.S., Brazil, Mexico and southern Africa. Opal and tourmaline are the birthstones of the month of October.

• Appearance

  Orangish yellow to dark red. The reddish fire opal is sometimes called "cherry opal".

• Enhancements

  Mexican fire opal is not enhanced.

  More information on gemstone enhancements.

• Mexican Fire Opal

• Calibrated Mexican Fire Opal

  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, dark orange, faceted, excellent cut..
  • AA Eye clean, medium to dark orange, faceted, good cut.

  Mexican Fire Opal		Quality	AAA	AA
  Shape	Size	Avg. Weight	Price Each
  Round	2mm	0.02	$ 8	$ 7
  	2.5mm	0.04	$ 9	$ 8
  	3mm	0.07	$ 11	$ 9
  	3.5mm	0.12	$ 14	$ 12
  	4mm	0.18	$ 20	$ 18
  	4.5mm	0.25	$ 28	$ 25
  	5mm	0.33	$ 52	$ 46
  	6mm	0.58		$ 100
  Oval	4x3mm	0.11	$ 14	$ 12
  	5x3mm	0.14	$ 18	$ 14
  	6x4mm	0.28	$ 28	$ 24
  	7x5mm	0.56	$ 63	$ 63
  	8x6mm	0.89	$ 153	$ 143
  	9x7mm	1.40	$ 272	$ 252
  	10x8mm	1.76	$ 648	$ 470
  Pear	5x3mm	0.11	$ 18	$ 16
  	6x4mm	0.26	$ 28	$ 24
  	7x5mm	0.43	$ 64	$ 56
  	8x5mm	0.57	$ 80	$ 70
  Trillion	4mm	0.11	$ 19	$ 17
  	5mm	0.18	$ 47	$ 41
  	6mm	0.29	$ 106	$ 98

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Last updated May 18, 2010
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