Guaranteed 100% natural chrome diopside not treated in any way... These beads are very nicely drilled and you will be able to use each and every bead on this 16" strand... Chrome diopside is a chromium-laden form of diopside that comes in beautiful shades of dark and light greens that mimic that of Emeralds. This vibrant stone is believed to be a creative aid as well as promoting commitment and the inner heart. We can understand that as this stone's gorgeous greens are hard not to love!