Rare! Londonite with Liddicoatite | natural crystal cluster, raw mineral specimen (Madagascar)Londonite with Liddicoatite from Madagascar is an exceptionally rare and highly collectible mineral association prized by serious collectors. Londonite, a rare cesium rich feldspar in the monazite group, typically forms pale yellow to greenish translucent crystals. It is often found intergrown with Liddicoatite, a unique lithium rich member of the tourmaline family known for its striking multicolored zoning. Madagascar is one of the worlds few sources