8x6-15x11mm Schalenblende Plain Nugget Beads 20 inch 53 pieces AA rare

Schalenblende plain nugget beads present as an opaque bandedformation polished to reviewl 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 asymmetrical and have bountiful areas of metallic grey hues. AA Rare gemstone mined in Poland.