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Clean Iolite Rough

Supplier From India
Mar-19-08

Name Iolite
Chemical Composition Mg2Al4Si5O18
Chemical Composition (Alternate) (Mg,Fe)4Al8(OH)2(Si2O7)5
Hardness 7.0 to 7.5
Refractive Index 1.53 - 1.54 to 1.54 - 1.55
Bi-refringence 0.001
Optic Sign Negative
Optical Character Biaxial
Specific Gravity 2.58 to 2.66
Crystalline System Rhombic


Only above 1 Kilo Lots of all size

Price and Minimum Quantity

Price: $65
MOQ: Not Specified

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