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  COURSE # 610
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CLASS PHOTOS - COURSE #610: Gem Treatments

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.
 
   
 
 
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