EGL - European Gemological Laboratory

EGL is one of the world's premier independent gemological laboratories. For over 25 years it has offered the fine jewelry trade and consumers accurate, reliable gemstone identification and professional certification to validate their gemstone purchases. Today the EGL Group has laboratories in New York City, Los Angeles, Vancouver, and Toronto.

The certificate records all the relevant information pertaining to the quartz including weight, color grade, clarity grade, measurements, and physical properties, as well as plotting diagrams. A rock crystal certificate from EGL International means your quartz has been subjected to highly scientific evaluation by a distinguished team of gemologists using state-of-the-art instrumentation and computer technology to assure you the most accurate assessment of the quartz you are buying. The laboratory environment and grading process is virtually impossible to duplicate anywhere else.

SGS Report - Hexagonal crystal quartz

The SGS is being made under a restrict test methoad were the L.O.I (lost of ignition) is calculated as 0.1. There is a result: 99,84% - SiO2; 0,026% - Fe2O3; 0,017% - Ca0; 0,011% - NaO2; 0,008% - Al2O3; 0,001% - K2O; 0,001% - TiO2.

Geological Survey Report - Seed quartz

There result are in %: 99,86% - SiO2; 0,001% - Fe2O3; 0,001% - Ca0; 0,001% - NaO2; 0,001% - Al2O3; 0,001% - K2O; 0,001% - TiO2; 0.1% - LOI.

Geological Survey Report - Gigant Hexagonal quartz

There result are in %: 99,89% - SiO2; 0,001% - Fe2O3; 0,002% - Ca0; 0,001% - NaO2; 0,002% - Al2O3; 0,001% - K2O; 0,001% - TiO2. The hexagonal quartz samples were twice disested in 20ml of HF and 5 ml of HNO3 on hot plate for 8 hours. After cooling, the solution was transfer to volumeric flask. The analysis was done on an Optima ICP-AES manufactured by P-E.