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	SAPPHIRE


	Crystal System:
		trigonal

	Hardness:
		9

	Specific Gravity:
		3,99 + - 0,04


	Refractive Index:
		1,762 - 1,770 + -

	Birefrigence:
		0,008

	Dispersion:
		0,011

	Chemical Composition:
		Al2O3

	ICA-Info

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	Weight:
		1,50 ct

	Size:
		7,7 x 5,7 mm

	Shape:
		oval

	Cut:
		facetted


	Clearity:
		vsi

	Colour:
		vivid red-orange

	Origin:
		Africa

	Treatments:
		N/A

Gemstones/
Sapphire/
Orange/Oval:

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