Agate is comprised of tiny quartz precious stones. Agate and chalcedony are basically a similar mineral. The differentiation between the two is that chalcedony is more uniform in shading and is called chalcedony when it is uniform in shading, and agate when it has lace like stripes. Agate is the most frequent gemstone beads and is handy in a large range of colorations and patterns.
Features of Agate Beads
Crystallography:HexagonalMohs hardness: 6.5-7Birthstone: ---Typical treatments:Dyeing, Heat TreatmentOccurrence:Africa / South America, etc.