Brazilianite was first thought to be chrysoberyl but deeper examination revealed it to be a new mineral. It named after the country which it was found. This can be confused with Chrysoberyl, beryl and topaz.
This is rare and unusual stone and only faceted for collectors. Crystals are fragile and brittle. It is with conchoidal fracture and perfect cleavage perpendicular to its length. Yellow and yellowish green can be found.
The main source is Brazil and smaller crystals are found in New Hampshire in USA. When cutting and polishing, this gemstone can be cut as Cushion, pendeloque and baguette.