"Rice grain" smithsonite crystals on aurichalcite are amongst the most desirable combination specimens from the famed Kelly Mine. Gemmy, tiny, rice-grain smithsonite crystals are richly scattered on the thin, gorgeous, powder-blue, botryoidal aurichalcite crust coating the gossan matrix. A very fine toenail from this renowned locale and seldom available in this quality. Ex. Mullane Collection.