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Star sapphire
a corundum variety that exhibit a fenomenal effect called asterism. A star,generally of siz rays,but rarely of four and 12 ( in case of gemination ) is seen when the strong beam of light heat the domed surface of the stone.
The cause of this effect is due to tiny needles crossed at 60° degrees withing the stone.The needle ( called silk) are rutile and they reflect the light like a star.The stone has to be cut with the table perpendicular to the C-axis and domed with a medium degree.
This stone here come from Burma.
Szie:13.4x11.7x6.5 mm.
Weight:11.57 ct.
CODE#3252
- Origin
- Burma
New
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