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Optical calcite is a very soft material that cleaves rather easily
The Tyndall effect is also the reason why blue chalcedony appears yellow or brown when strong light shines through it
longer wavelengths are transmitted more while shorter wavelengths are diffusely reflected by scattering
Weight: 40 grams
Add a sphere stand to your order and give this sphere a proper place in your collection
Shangaan Amethyst Sceptor TU2958 bumblebee jasper Optical calcite is a veryShangaan Amethyst Sceptor Approx. Dimensions: 3x1. 75x2. 25 inches Approx. Weight: 125 grams Locality: Chibuku Mine, Zimbabwe From the Chibuku Mine in Zimbabwe, Shangaan amethyst are named after the tribe that mines these crystals. In many of these crystals you will find inclusions of red hematite. Enhydros, or fluid inclusions, are also found in many of these amethyst specimens. Acrylic stand not included, but can be purchased from our Stands,
US$ 62.40
US$ 52.00
US$ 25.68
