2.5-3mm approximate measure for these Black Spinel faceted rondelle beads presented on a 13.5 inch strand of 170 pieces.
Blue Mystic Labradorite native cut faceted rondelle 13 inch 140 pieces 3mm diameter average
3-4mm Dark Carnelian Agate faceted rondelle beads 13 inches 115 pieces are approximate measurements and counts. Color treated Agate
approximate 6mm, 15 inch, 69 pieces
Green Amethyst or Prasiolite approximate 6-7mm average on the 13 inch strand of 48 pieces