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Ashstone Exports Ltd

Moonstone

Property Specification
Chemical Formula (K,Na)AlSi₃O₈ (Potassium Sodium Aluminum Silicate)
Crystal System Monoclinic
Hardness (Mohs) 6 – 6.5
Specific Gravity 2.56 – 2.59
Cleavage Imperfect
Fracture Uneven
Luster Vitreous to pearly
Transparency Transparent to translucent
Refractive Index 1.520 – 1.530
Color Colorless, white, gray, yellow, blue, peach, and green
Streak White
Tenacity Brittle
Crystal Habit Prismatic, tabular, or massive