Rainbow Calsilica

An artifical material created for carving/lapidary purposes. Contains a mixture of calcite, plastic and artifical colouring pigments (PB15, an art-supply pigment), and a paraffin-like material. [ref: Winter 2002, Gems and Gemology, journal of Gemological Institute of America] No matter what stories you hear or believe surrounding this material, it is very nice colorful material that is VERY popular. So, if you want something that sells... this is it.