 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 while keeping in mind 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. Missing from the picture 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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