Agate is actually a sort of chalcedony, a stone made predominantly of silica and formed below rigorous heat, and comes in numerous colours and styles. In terms of this sort of gemstone, the names of the differing types of agate beads are visually descriptive: tiger’s eye, hearth agate beads, moss https://www.gemsbiz.com/blog/explore/where-to-buy-faceted-gemstone-beads