Natural Watermelon Tourmaline semi-precious gemstone round beads Quantity: one strand approx 15" long Sizes available: approx 2.5mm - 3mm, approx 3mm - 3.5mm or approx 3.5mm - 4mm, please choose your size from the drop down menu. Beads sizes do vary between different gemstones or even batches for the same gemstone. Please note that there could be a variation of up to 0.5mm in size Packed and dispatched from West Yorkshire, UK Beads hole size reference: 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 WARNING: the product is not suitable for children under 6 years of age.