Agate & Quartz Slab Agate & Quartz Slab Agate & Quartz slab from Brazil. One side has been polished the other is rough. This piece is approx. 9 1/4" X 8" X 1 1/8" thick. Lucite stand will be included. $110.00 Post navigationPrevious post: Amethyst & CalciteNext post: Petrified Wood Slab