Produced by Kyocera Corporation in Japan in the mid-1990s using the Czochralski method. These rare examples were modeled after vanadium-colored chrysoberyl discovered in Tunduru, Tanzania. Clean, vividly colored, and now discontinued—seldom encountered in the gem trade.
This set of four bright bluish-green crystals represents a rare gemological experiment from the 1990s. These are vanadium-bearing synthetic chrysoberyls grown by Kyocera Corporation using the highly controlled Czochralski crystal-pulling technique. They were created in response to a natural discovery: vanadium-colored chrysoberyl from the Tunduru region of Tanzania that lacked the chromium content usually seen in alexandrite.
The vivid green tones in these synthetics come from vanadium (V³⁺), which gives a subtle color shift under different lighting and gentle pleochroism from yellowish green to bluish green. Unlike flux-grown Russian synthetics, Kyocera’s material is free of inclusions, bubbles, or flux residue, making it ideal for gemological reference collections.
These four pieces represent one of the few known examples of this now-unavailable synthetic material
4 pieces / 5.00 grams / 25 carats
Estimate: $600 - $750
