Aventurine Quartz Rough.

Gemological Information for Aventurine Quartz
Color Translucent to Opaque Green (most common), Blue, Gray, Yellow and Brown with Aventurescence
Crystal Structure Trigonal
Refractive Index 1.544-1.553
Durability Very durable
Hardness 7
Treatments Dyeing
Country of Origin Worldwide Deposits
Quartz Care
Ultrasonic Cleaning Usually Safe
Steam Cleaning Usually Safe
Warm Soapy Water Safe
Chemical Attack Avoid
Light Sensitivity May Fade
Heat Sensitivity May Change Color