Colin Winter receiving the R.K. Mitchell 'Lifetime' Award for Excellence in Spectroscopy
Colin & Hilary Winter at a book signing for NAJA in Tuscon with Gail Brett Levine
Gem Dealing on tour to Sri Lanka, organized by Colin & Hilary Winter for Gem-A & The NAJ 2017
Sapphire mining in Elahera, Sri Lanka on tour with Gem-A & The NAJ 2017
Washing Gem Gravel in Ratnapura on our recent tour with Gem-A & The NAJ 2017
A Typical Gem Pit in Ratnapura, Sri Lanka on our recent tour with Gem-A & The NAJ 2017
Our Gem-A & NAJ study group around a gem washing pit in Ratnapura, Sri Lanka 2017
Examining a beautiful untreated natural blue sapphire in Ratnapura on our recent tour with Gem- A & The NAJ 2017
Colin Winter with the late Arthur C. Clarke (author of 2001 a Space Odyssey) in Colombo, 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 being presented with an award for sharing his knowledge and experience with a group from the U.S. based Accredited Gemologists Association, at the AGTA Gem Show in Tucson Arizona in February 1998.
The OPL Stand at the Gem A Scottish Branch Conference.
A Delegate at the NAJA Workshop studying a gemstone spectrum with an OPL Teaching Spectroscope & Stand, Tucson Gem & Mineral Show 2009.
Colin with Howard Rubin - 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.
