Nikon Small World 1990 Competition Winners
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Fourth Place, 1990 Competition John I. Koivula Gemological Institute of America Santa Monica, California, USA Thin slab of Brazilian agate (12x) Brightfield |
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Fourth Place, 1990 Competition John I. Koivula Gemological Institute of America Santa Monica, California, USA Thin slab of Brazilian agate (12x) Brightfield |
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