Petra gems. Logo Petra-Gems Skillfully made.
Biron created emerlad

Biron 培植祖母绿

  • 品牌:Petra Emerald(以水热法长晶技术制成的绿宝石) 
  • 化学成份:Be3, Al2, Si6, O18 
  • 颜色:淡绿色
  • 晶体形状:六角形
  • 摩氏硬度:7.5-8.0 
  • 比重:2.67-2.75 
  • 折射率:1.578 - 1.572 
  • 色散 (C-F): 0.014 
  • 熔点:1250°C/2282°F

 

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