MYSTERY RAINBOW STONE

This stone has caused some confusion as it has been in the market for a while .After all the research i can find i believe it has come from a old cutting factory in Chihauhua  Mexico and it is the waste product they discared after cutting different materials.The material is dug up from a old tip but it does have some amazing patterns and it does look very old.When cut there is a strong resin smell so i have decided to sell it as a mystery stone which will still be fun to cut.

Weight 49.40 cts app

Size 35 X 29 X 8 mm app

Photo taken wet

This is what the gemological institue of America said about the stone

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]

Although suppliers claim it to be a natural stone, tests have indicated that it is probably powdered carbonate rock artificially coloured and then stabilized with plastic.