Frosted Natural African Turquoise(Jasper) Round Beads, Size: Beads: about 8mm in diameter, hole: 1mm, 100pcs/box; Packing Size: 7.2x7.4x1.7cm, 1pc. â African Turquoise is a jasper stone that is mined in Africa. This stone is called African Turquoise as it rich blue-green color and has the similar matrix pattern. African turquoise is actually a much harder stone than traditional turquoise, which makes it great for beaded bracelets that may get abused in day-to-day wear.