• Hardness

  9.0.

• Occurrence

  Myanmar (Burma), Thailand, India, Sri Lanka (Ceylon), Tanzania, Afghanistan, Australia, Brazil, Cambodia, Malagasy Republic, Malawi, Pakistan, Zimbabwe (Rhodesia), United States (Montana, North Carolina).

• Appearance

  Blue sapphires are found in the form of star sapphires. These six-rayed blue stars are very attractive and are much more valuable than the black variety. Care should be taken when identifying all forms of star corundum, as synthetic stars are very inexpensive to produce and are common. Synthetic stars appear to be of high quality, with very little if any irregularites, razor sharp stars. The natural stone tends to be irregular and imperfect, and the stars may be wavy, whereas the sythetic stars have very straight lined stars. An "L" stamped on the reverse of the stone identifies it as a synthetic "Linde star". The sapphires found on this page are all natural.

• Enhancements

  Blue star sapphire is always heat treated to produce, intensify or lighten color and/or improve color uniformity and appearance. Occasionally diffusion is used to produce asterism.

  More information on gemstone enhancements.

• Blue Star Sapphire

  • Item #SPH593
    	2.24 ct.
    	8.1x6.2mm Cabochon, Oval Cut
    	Medium
    	Moderately Strong Greenish Blue
    	Translucent
    	[H] Heated to improve color.
    	one of a kind
    with a fine 6 rayed star.
    Blue Star Sapphire	$ 414.99

  • Item #SPH606
    	5.16 ct.
    	10.9x9.0mm Cabochon, Oval Cut
    	Very Dark
    	Strong Very Strongly Greenish Blue
    	Opaque
    	[E] Routinely enhanced.
    	one of a kind
    excellent 6 rayed star.
    Blue Star Sapphire	$ 959.99

  • Item #SPH607
    	10.70 ct.
    	13.5x10.9mm Cabochon, Oval Cut
    	Very Dark
    	Strong Very Strongly Greenish Blue
    	Opaque
    	[E] Routinely enhanced.
    	one of a kind
    excellent 6 rayed star.
    Blue Star Sapphire	$ 1,984.99

  • Item #SPH608
    	9.71 ct.
    	13.3x10.9mm Cabochon, Oval Cut
    	Very Dark
    	Strong Very Strongly Greenish Blue
    	Opaque
    	[E] Routinely enhanced.
    	one of a kind
    excellent 6 rayed star.
    Blue Star Sapphire	$ 1,799.99

  • Item #SPH609
    	12.18 ct.
    	14.0x11.8mm Cabochon, Oval Cut
    	Very Dark
    	Strong Very Strongly Greenish Blue
    	Opaque
    	[E] Routinely enhanced.
    	one of a kind
    excellent 6 rayed star.
    Blue Star Sapphire	$ 2,259.99

  • Item #SPH622
    	3.15 ct.
    	8.7x7.6mm Cabochon, Oval Cut
    	Dark
    	Strong Very Strongly Greenish Blue
    	Opaque
    	[E] Routinely enhanced.
    	one of a kind
    excellent 6 rayed star.
    Blue Star Sapphire	$ 584.99

  • Item #SPH625
    	3.67 ct.
    	10.2x8.2mm Cabochon, Oval Cut
    	Dark
    	Strong Very Strongly Greenish Blue
    	Opaque
    	[E] Routinely enhanced.
    	one of a kind
    excellent 6 rayed star.
    Blue Star Sapphire	$ 679.99

  • Item #SPH626
    	4.93 ct.
    	9.8x8.5mm Cabochon, Oval Cut
    	Dark
    	Strong Very Strongly Greenish Blue
    	Opaque
    	[E] Routinely enhanced.
    	one of a kind
    excellent 6 rayed star.
    Blue Star Sapphire	$ 914.99

  • Item #SPH627
    	5.69 ct.
    	10.9x8.5mm Cabochon, Oval Cut
    	Dark
    	Strong Very Strongly Greenish Blue
    	Opaque
    	[E] Routinely enhanced.
    	one of a kind
    excellent 6 rayed star.
    Blue Star Sapphire	$ 1,054.99

  • Item #SPH628
    	3.89 ct.
    	10.3x8.2mm Cabochon, Oval Cut
    	Dark
    	Strong Very Strongly Greenish Blue
    	Opaque
    	[E] Routinely enhanced.
    	one of a kind
    excellent 6 rayed star.
    Blue Star Sapphire	$ 719.99

  • Item #SPH629
    	4.49 ct.
    	11.1x9.1mm Cabochon, Oval Cut
    	Dark
    	Strong Very Strongly Greenish Blue
    	Opaque
    	[E] Routinely enhanced.
    	one of a kind
    excellent 6 rayed star.
    Blue Star Sapphire	$ 834.99

  • Item #SPH630
    	10.48 ct.
    	13.3x11.4mm Cabochon, Oval Cut
    	Dark
    	Strong Very Strongly Greenish Blue
    	Opaque
    	[E] Routinely enhanced.
    	one of a kind
    excellent 6 rayed star.
    Blue Star Sapphire	$ 1,944.99

  • Item #SPH655
    	5.67 ct.
    	10.4x8.2mm Cabochon, Oval Cut
    	Dark
    	Strong Very Slightly Greenish Blue
    	Opaque
    	[U] Diffusion treated.
    	one of a kind
    excellent 6 rayed star.
    Blue Star Sapphire	$ 1,049.99

  • Item #SPH656
    	6.16 ct.
    	11.1x8.1mm Cabochon, Oval Cut
    	Medium Dark
    	Strong Very Slightly Greenish Blue
    	Opaque
    	[U] Diffusion treated.
    	one of a kind
    excellent 6 rayed star.
    Blue Star Sapphire	$ 1,144.99

  • Item #SPH657
    	4.86 ct.
    	11.4x9.3mm Cabochon, Oval Cut
    	Medium Dark
    	Strong Very Slightly Greenish Blue
    	Opaque
    	[U] Diffusion treated.
    	one of a kind
    excellent 6 rayed star.
    Blue Star Sapphire	$ 899.99

  • Item #SPH658
    	8.46 ct.
    	12.7x10.7mm Cabochon, Oval Cut
    	Medium Dark
    	Strong Very Slightly Greenish Blue
    	Opaque
    	[U] Diffusion treated.
    	one of a kind
    excellent 6 rayed star.
    Blue Star Sapphire	$ 1,569.99

  • Item #SPH659
    	16.95 ct.
    	16.0x14.0mm Cabochon, Oval Cut
    	Medium Dark
    	Strong Very Slightly Greenish Blue
    	Opaque
    	[U] Diffusion treated.
    	one of a kind
    excellent 6 rayed star.
    Blue Star Sapphire	$ 3,144.99

  • Item #SPH663
    	3.72 ct.
    	10.2x8.0mm Cabochon, Oval Cut
    	Medium Dark
    	Strong Blue
    	Opaque
    	[A] Not normally enhanced.
    	one of a kind
    with an excellent six rayed star
    Blue Star Sapphire	$ 689.99

  • Item #SPH665
    	4.17 ct.
    	10.1x7.7mm Cabochon, Oval Cut
    	Medium Dark
    	Strong Blue
    	Opaque
    	[A] Not normally enhanced.
    	one of a kind
    with an excellent six rayed star
    Blue Star Sapphire	$ 774.99

  • Item #SPH666
    	3.58 ct.
    	10.4x8.3mm Cabochon, Oval Cut
    	Medium Dark
    	Strong Blue
    	Opaque
    	[A] Not normally enhanced.
    	one of a kind
    with an excellent six rayed star
    Blue Star Sapphire	$ 664.99

  • Item #SPH667
    	3.77 ct.
    	10.3x8.3mm Cabochon, Oval Cut
    	Medium Dark
    	Strong Blue
    	Opaque
    	[A] Not normally enhanced.
    	one of a kind
    with an excellent six rayed star
    Blue Star Sapphire	$ 699.99

  • Item #SPH671
    	11.20 ct.
    	13.3x12.1mm Cabochon, Oval Cut
    	Medium Dark
    	Strong Blue
    	Opaque
    	[A] Not normally enhanced.
    	one of a kind
    with an excellent six rayed star
    Blue Star Sapphire	$ 2,079.99

  • Item #SPH672
    	10.37 ct.
    	13.6x11.4mm Cabochon, Oval Cut
    	Medium Dark
    	Strong Blue
    	Opaque
    	[A] Not normally enhanced.
    	one of a kind
    with an excellent six rayed star
    Blue Star Sapphire	$ 1,924.99

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Last updated January 15, 2008
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