These Powder glass beads from Ghana look amazingly like stone, grey and mottled, with rings of yellow and red. Rondelle shaped, 6mm by 10mm approximate (roughly formed), 5mm hole. you will get 8 beads.
Not sure about sizing? beads are measured in millimeters, 1mm is very small. a regular lentil is typically 6mm and a grain of couscous is about 1mm. 1 inch is about 24mm.