Chrysoberyl (var: Alexandrite) (color-changing twin) Goddard & Mihelic and Groben antimony sulfosalt Franckeite consisting of

antimony sulfosalt Franckeite consisting of somewhat "sword"-shaped crystals oriented into spherical aggregates which are sitting on matrix

virtually eye-clean Tourmaline gem with a lovely pinkish-orange color and slight peach highlights depending upon the angle at which the stone is viewed

As you can see from the backlit photo

This is unique material

One corner has a contact

Chrysoberyl (var: Alexandrite) (color-changing twin) Goddard & Mihelic and Groben antimony sulfosalt Franckeite consisting ofAlexandrite is one of the most well known color changing minerals varieties of species extant. As a matter of fact, when we refer to other color changing minerals varieties, the term "Alexandrite Type" effect is often used to describe the color change. Alexandrite is not actually a species, but rather the color changing variety of Chrysoberyl, first discovered in Russia in the 1830 was and named after Tsar Alexander II. Even though the material has