• Hardness

  6.0 - 7.5.

• Occurrence

  Myanmar (Burma), Sri Lanka (Ceylon), U.S. (Idaho), Czechoslovakia, India, Italy, Germany, Brazil

• Appearance

  Sometimes referred to as "fibrolite", the crystals occur in groups, resembling fibers.

• Enhancements

  Sillimanite is not known to be enhanced.

  More information on gemstone enhancements.

• Fibrolite

  • Item #SLM120
    	5.52 ct.
    	12.2mm Cabochon, Round Cut
    	Extremely Dark
    	Slightly Brownish Strongly Purplish Red
    	Translucent
    	[N] Not enhanced.
    	one of a kind
    with an excellent cat's eye.
    Fibrolite	$ 69.99

  • Item #SLM121
    	9.12 ct.
    	10.9x11.2mm Cabochon, Round Cut
    	Extremely Dark
    	Slightly Brownish Strongly Purplish Red
    	Translucent
    	[N] Not enhanced.
    	one of a kind
    with an excellent cat's eye.
    Fibrolite	$ 114.99

  • Item #SLM122
    	11.72 ct.
    	12.2x12.3mm Cabochon, Round Cut
    	Extremely Dark
    	Slightly Brownish Strongly Purplish Red
    	Translucent
    	[N] Not enhanced.
    	one of a kind
    with an excellent cat's eye.
    Fibrolite	$ 144.99

  • Item #SLM128
    	4.77 ct.
    	11.0x10.6mm Cabochon, Round Cut
    	Very Dark
    	Brown
    	Opaque
    	[N] Not enhanced.
    	one of a kind
    with an excellent cat's eye
    Fibrolite	$ 59.99

  • Item #SLM129
    	5.46 ct.
    	10.0mm Cabochon, Round Cut
    	Very Dark
    	Brown
    	Opaque
    	[N] Not enhanced.
    	one of a kind
    with an excellent cat's eye
    Fibrolite	$ 69.99

  • Item #SLM130
    	6.69 ct.
    	11.1x10.8mm Cabochon, Round Cut
    	Very Dark
    	Brown
    	Opaque
    	[N] Not enhanced.
    	one of a kind
    with an excellent cat's eye
    Fibrolite	$ 84.99

  • Item #SLM115
    	8.79 ct.
    	14.2x11.2mm Cabochon, Oval Cut
    	Dark
    	Brown
    	Opaque
    	[N] Not enhanced.
    	one of a kind
    with an excellent cat's eye
    Fibrolite	$ 64.99

  • Item #SLM123
    	3.65 ct.
    	10.9x9.1mm Cabochon, Oval Cut
    	Extremely Dark
    	Slightly Brownish Strongly Purplish Red
    	Translucent
    	[N] Not enhanced.
    	one of a kind
    with an excellent cat's eye.
    Fibrolite	$ 44.99

  • Item #SLM124
    	5.98 ct.
    	11.7x9.2mm Cabochon, Oval Cut
    	Extremely Dark
    	Slightly Brownish Strongly Purplish Red
    	Translucent
    	[N] Not enhanced.
    	one of a kind
    with an excellent cat's eye.
    Fibrolite	$ 74.99

  • Item #SLM125
    	10.26 ct.
    	13.1x11.3mm Cabochon, Oval Cut
    	Extremely Dark
    	Slightly Brownish Strongly Purplish Red
    	Translucent
    	[N] Not enhanced.
    	one of a kind
    with an excellent cat's eye.
    Fibrolite	$ 124.99

  • Item #SLM126
    	10.05 ct.
    	15.0x10.1mm Cabochon, Oval Cut
    	Extremely Dark
    	Slightly Brownish Strongly Purplish Red
    	Translucent
    	[N] Not enhanced.
    	one of a kind
    with an excellent cat's eye.
    Fibrolite	$ 124.99

  • Item #SLM127
    	18.04 ct.
    	15.3x12.4mm Cabochon, Oval Cut
    	Extremely Dark
    	Slightly Brownish Strongly Purplish Red
    	Translucent
    	[N] Not enhanced.
    	one of a kind
    with an excellent cat's eye.
    Fibrolite	$ 224.99

  • Item #SLM131
    	3.14 ct.
    	7.7x7.2mm Cabochon, Oval Cut
    	Very Dark
    	Brown
    	Opaque
    	[N] Not enhanced.
    	one of a kind
    with an excellent cat's eye
    Fibrolite	$ 39.99

  • Item #SLM133
    	4.76 ct.
    	11.8x9.2mm Cabochon, Oval Cut
    	Very Dark
    	Brown
    	Opaque
    	[N] Not enhanced.
    	one of a kind
    with an excellent cat's eye
    Fibrolite	$ 59.99

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Last updated March 29, 2008
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