Zircon

N° standard / mount: 084 / Tubes

Standard elements: Si Zr

Mineral class: Silicates

Group: Zircons

Locality: Ceylon

Comments:

seems homogeneous, no visible inclusions
– White gemstone G-13 (G-14?) from Gübelin
– Very homogeneous and pure, not radioactive
– Strong blue CL signal

Reference: H028 ETH Zurich J. Sommerauer