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Japanese Beginnings
Mr. Tamura and Mr. Shigetomi went into partnership to market the scope. Because he was so well known in Japan, Mr. Tamura was able to develop associations with important people in the diamond industry. He and his partner were invited to demonstrate the FireScope at important jewelry and gemstone trade shows in New York, Dallas, and Los Angeles.
But for most people in the diamond trade at the time, the invention of the scope was not a significant event. Whenever Mr. Tamura demonstrated it, many jewelers invariably saw things in their stones they might not have noticed otherwise - things they perhaps did not want to see. The device did not find the hoped-for receptive market.
Instead of marketing the Firescope, the partners decided to use their device to market diamonds that were proportioned according to Tolkowsky.
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