Size: 4x13mm (28 - 29 beads)
Beads hole size:
4mm round beads hole size - approx 0.6mm
6mm round beads hole size - approx 0.8mm - 1mm
8mm round beads hole size - approx 1mm
10mm round beads hole size - approx 1mm - 1.2mm
12mm round beads hole size - approx 1mm - 1.5mm
Beads sizes and color do vary between different gemstones or even batches for the same gemstone.
Please note that there could be a variation of up to 1mm - 1.5mm in size.