Tiger eye stone has a rich yellow and golden brown stripes, with a fine golden lustre when polished. It is basically a variety of crystalline quartz formed by alteration of an asbestos mineral (it being replaced by silica) known as crocidolite.The stretchy bracelet is made of natural blue tiger-eye 8 inch in length.the beads measure approx.16mm in diameter.This kind of bracelet is exquisite and very fashionable.Good charming! You will be right to choose this style of bracelet.Good appreciation!