Burmese Cordierite 5.70 ct aka iolite Untreated SKU-1

Item Information

Dimensions (mm) 14.5 x 9.4 x 6.3mm
Weight (carats) 5.7 carats
Colors
No Treatment

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Cordierite or iolite is a magnesium iron aluminium cyclosilicate. Iron is almost always present and a solid solution exists between Mg-rich cordierite and Fe-rich sekaninaite with a series formula: (Mg, Fe)₂Al₃ to (Fe, Mg)₂Al₃. Wikipedia
Color: Blue, Purple, Grey
Luster: Vitreous
Crystal system: Orthorhombic crystal system
Chemical formula: Mg₂Al₄Si₅O₁₈
Hardness (Mohs hardness scale): 7 – 7.5
Transparency: Translucent, Transparent
Refractive index: 1.55 – 1.62

Iolite is a beautiful violet stone that has pleocroic properties changing in colour to yellow, brown or clear as you turn the stone. It has also been known as "water sapphire" and the "violet stone". Iolite is a

Treatment None

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79 bids placed so far

$82 sangyj
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Audit Information

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Pricing & Details

Bid Increment $1
Starting Bid $1
Auction ID 1570148
Watchers 3 watching
Viewed 182 times
Starts 23rd Aug 2021 12:30pm PDT
Ends 2nd Sep 2021 12:31pm PDT

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