Training - Class Photos - www.themelis.com

COURSE #510 (Gem Treatments) - CLASS PHOTOS

Lab session: Microscopic examination of low-temperature heat-treated gems by the participants	Lab session: Observing the heating chambers at 1500oC using a mirror in the Lakmini gas combustion furnace	Lab session: Removing the rubies at 1000oC from the crucibles after the heating process
Lab session: Unloading crucible at 1250oC from the furnace	Lab session: Preparing sapphires and additives for the beryllium process	Lab session: Examining sapphires right after the beryllium process
Lab session: Mixing additives with Mong-Hsu rubies for subsequent heating process	Lab session: Demonstration of Lakmini high-temperature gas combustion furnace	Lab session: Preparation process for adding fluxes and other chemicals prior to heating process
Lab session: Examining stones after the heating process	Lab session: Removing rubies form the crucible after the heating process	Lab session: Examination and recording the information of selected rubies-sapphires prior to heating
Lab session: Recovering the sapphires from the crucibles after the beryllium heating process	Lab session: Demonstration of Lakmini high-temperature gas combustion furnace	Lab session: Recording the surface temperature of the muffle used in the heating rubies-sapphires
Power break: It is 3:00 PM and the daily class is not finihsed yet	Lab session: Removing the dummy ceramics from the muffle in the 1800oC electric furnace	Lab session: Students examining rubies-sapphires after heat-treated with beryllum-based additives.

SITE MAP

Site Updated October 5, 2011
Best viewed with Firefox at 1280 pixels