This picture shows Colin Winter with the late Arthur C. Clarke (author of 2001 a Space Odyssey) in Columbo, Sri Lanka. Arthur Clarke is seen holding an OPL Spectroscope which Colin gave to him on the day of the NASA Mars landing.
Colin & Hilary sign a copy of their book for Bernd Munsteiner in Tuscon.
Colin buying gemstones from a gem dealer at Ratnapura in Sri Lanka.
'A Students Guide' goes to the printing press.
Colin explaining OPL Hylite techniques to delegates at the NAJA Workshop, Tucson Gem & Mineral Show 2009.
A Delegate at the NAJA Workshop studying a gemstone spectrum with an OPL Teaching Spectroscope & Stand, Tucson Gem & Mineral Show 2009.
Colin is being presented with a Certificate of Thanks after giving an extended Lecture & Hands-on Workshop for the National Association of Jewelry Appraisers (NAJA) at the Tucson Gem & Mineral Show in 2009.