 Dr. Hanneman's Affordable Gemology Instruments. Photo: E. Skalwold | |
| Some Hanneman instruments including the Mini-Cube and penlight. Dr. Hanneman altered one cube to fit my MegaLoupe Maglight, thus helping to reduce my flashlight collection. The cube creates a darkfield lighting environment and isolates the stone with the adjustable ring up top. Some people use blue tack on a penlight, but I wouldn't suggest trying to put blue tack on someone's stone while they are watching. I just use my fingers and ignore the hemoglobin lines in the spectrum. In liu of that, the cube is a nifty gizmo and the light is my favorite penlight... I think it must be an antique as I can only find this model on the flashlight museum website or I would buy ten more. What's missing from this picture are Dr. Hanneman's filters and SG scale - which is sittng in pieces on my desk after travelling back from California this past Spring. I learned to use the scale in Bangkok on a model which Dr. Seriwat constructed from Dr. Hanneman's instructions. For my 50th birthday a friend who is an engineer constructed one for me and a matching one for his wife. They work beautifully - I'll post a picture of the set-up soon. I await my next birthday to aquire the filters. Also missing is Dr. Hanneman's favored reference text, Schumann's Gemstones of the World which is on the shelf out of the picture. This book has a great range of pictures and detail; I've seen it all over the world in the hands of gemologists, teachers, Chanthaburi stone dealers, hobbyists and store owners. It is just a great reference and belongs beside Webster's Gems, Arem's Color Encyclopedia of Gemstones and other essential gemology texts. | |
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