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“Gerhardt reminded us that these pieces were mined in 1969 in the very first year of mining production before the material was named tanzanite. When he purchased them in Meralani, Tanzania, he was the first to bring the material back to Idar-Oberstein and found them to be blue zoisite. As a normal procedure he tried heat treatmernt and was amazed at the results. He was quick to purchase as much rough as he could, recognizing that the blue zoisite would become a new major gemstone. He kept this piece natural (unheated) as it was so large and had a fine termination whereas most of what he bought were broken fragemnts.
“After some discussion three specimens were selected and purchased. The great memories were enhanced by Gerhardt reminding me that the large single tanzanite I had just purchased from him was quite famous.”
Indeed this crystal is featured in two separate 1970s publications. Luckily we have copies of these publications in Pala International’s library. Upon returning to California, we looked up the photos of our new aquisition. Please enjoy them here. This natural-color tanzanite crystal — together with the publications — is available.
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