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Zircon

Zircon, While Highly Dispersive, has a Subadamantine Luster.

Gemological Information for Zircon

  
Color:Colorless, Blue, Yellow, Orange, Brown, Violet & Red
Crystal Structure:Tetragonal – 4 Sided Prisms with Pyramidal Terminals
Refractive Index:High stones = 1.777 – 1.987
Durability:Fair to Good, this Decreases with Heat Treatment
Hardness:6.5 to 7.5
Family:
Similar Stones:Spessartite, Sphene, Andradite, Sphalerite, Topaz, Tourmaline, Synthetic Rutile, Diamond & Strontiium Titanate
Treatments:Heat Treatment to Change Color
Country of Origin: Sri Lanka, Myanmar, Cambodia, Thailand & Australia

Zircon Care

  
Ultrasonic Cleaning:Not Safe
Steam Cleaning:Not Safe
Warm Soapy Water:Safe
Chemical Attack:Avoid
Light Sensitivity:Heat Treated Stones may Return to their Original Color
Heat Sensitivity:May Change Color