6-7mm Schalenblende Plain Coin Beads 8 inch 30 pieces AA rare

Schalenblende plain coin beads present as an opaque banded formation polished to revealed concentric Sphalerite and Wurtzite with metallic areas of Galena. Schalenblende consists of alternating bands of brown-yellow Sphalerite, Brunckite, and Wurtzite, and Lustrous Galena of which Sphalerite and Wurtzite are fluorescent in UV light. These beads are symmetrical and have bountiful areas of metallic grey and banded golden yellow and brown hues. AA Rare gemstone mined in Poland.