Although not all of them, some black mica-containing quartz crystals also contain garnet. Size: Inner diameter: Approximately 16cm (±0.5cm) Beads: Approximately 7.8mm to 8mm, 23 beads Condition: Due to the nature of natural minerals, there may be cracks, inclusions, chips, scratches, stains, cloudiness, dents, etc. Please be aware of this. Shipping method: "Nekopos" is planned.