8mm. These are beautiful Red Creek Jasper gem stone round beads. The gem stone Red Creek Jasper is a wonderful color combination of softly muted shades of mustard yellow, olive green and burnt red, and warm whites. The natural formed patterns in these gem stone beads are reminiscent of a picturesque sunset. Jasper gem stone beads are said to absorb negative energy, balance the yin and yang, and stimulate the imagination.