Late 7mm to 8mm I will be listing items little by little to organize my collection. * To prevent any problems, please be sure to ask any questions you may have regarding the size of the beads, inner diameter, etc., before purchasing. Please understand that you will not be able to confirm these details through images after your purchase. * There may be small chips, cracks, and scratches. Thank you for your understanding. #NaturalStone #NaturalStoneBracelet #KyaniteInQuartz #Kyanite