Agate slices
Agate is a form of finely grained, textual Quartz.
Every slice is unique with beautiful patterns, colour variations and has been polished on both sides to show their ornamentation.
Sizes vary, please have a look at the individual piece for their diameters.
Please see below image of a mosaic, where the artist Carol Hill from South Australia combined Smalti and Agate to create a unique piece of art.