Ombr Black and Green Tourmaline Straight Drilled PlainNugget Beads measure approximately 9x7mm to 11.5x9mm and have approximately 36 gems on the strand. The gems have a vitreous luster and thebeads transition fromatransparent medium avocado green to an opaque black hue.This strand of Tourmaline beads haveinternal characteristicswithsome surface irregularities and are well matched on the strand.