4mm Santorini Blue Chalcedony checkerboard calibrated faceted coins 12.5 inch 85 beads AAA

4mm Santorini Blue Chalcedony checkerboard calibrated faceted coins have a vitreous luster, great polish, a calibrated shaped body, the gem bodies are translucent quality, and the beads are well matched for quality on the strand creating a beautiful AAA grade bead group. 1mm drill hole internal diameter