Biotite on Anthophyllite | Czech Republic Kyanite it is most famous for

it is most famous for its brilliant green/blue fluorescence under shortwave UV light

colored by trace elements such as titanium

This is one of the few minerals that can form crystals ranging anywhere between gemmy and transparent to opaque and metallic-like

5" and weighs 1lb

5” x 2” and weighs 2

Biotite on Anthophyllite | Czech Republic Kyanite it is most famous forBiotite on anthophyllite refers to a common geological occurrence where dark mica (biotite) crystals grow within or around fibrous anthophyllite, an amphibole mineral, often forming attractive specimens with distinct textures like bladed crystals or nodular "balls," indicating specific metamorphic conditions (low HCl fluids). This item is 3. 5 x 2 and weighs 8. 0 oz