Bauxite is best known as the ore of aluminium, but well-patterned lapidary material — with its pisolitic spheres in cream, rust and brick tones — makes surprisingly decorative cabochons and collector pieces, a conversation stone if ever there was one.GEMIC Institute offers selected natural bauxite specimens, certified by our Siem Reap laboratory, each photographed individually. Unique pieces with tracked worldwide shipping and a 30-day inspection period.