Lithium quartz point polished ~ incl. 1.5mm leather strap No choice here, both are AB quality, very rare and super cheap Lithium quartz is a special variety of the mineral quartz, found only in one location in Brazil. The mineral is named for its lithium content. Prismatic crystals are usually found, in which the inclusions of lithium are clearly visible. We hope you enjoy browsing our shop. If you like what you see, we would be very happy if you would follow us here :) "A stone is the condensed history of the universe" ~Art of Nature Berlin~