Heating of emerald (Nanosital) HEAT-TECH info 1 month ago This video shows an emerald (Nanosital) being heated with a halogen point heater to change its color. Please check the following site for more information. Related page: Pinpoint heating of 0.5mm mechanical pencil lead Heating of the tile Heating of the refractory brick Heating, melting and vitrification of rocks series 23 – Sandstones Heating, melting and vitrification of rocks series 26 – Chalcopyrite Heating, melting and vitrification of rocks series 7 – Basalt Heating, melting and vitrification of rocks series 8 – Limestone Heating, melting and vitrification of rocks series 9 – Granite