Among the rarest of USA gem crystals, are these intensely colored Idaho aquamarine crystals. The color is breathtaking and like nothing else from the USA. From a miarolitic cavity in the Sawtooth batholith, this aqua crystal is lustrous and gemmy with a rich blue color saturation. Ex. Bill Larson collection, sold to a German collector in 1981 in Munich at the show; and only resold again recently. This is a historic, important USA treasure! The mass is 22 grams.