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Synthetic or Imitation? An Investigation of the Products of Kyocera Corporation That Show Play-Of-Color

An investigation of the difference between synthetic opal and opal simulant.

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"Opalite": Plastic Imitation Opal with True Play-Of-Color

A plastic imitation opal that shows true play-of-color was advertised as "new" and offered for sale under the trade name "Opalite" at the Gem and Lapidary Dealers Association (GLDA) Tucson show in February 1988.

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