Andalusite for sale at wholesale prices. Andalusite is a unique gemstone that can be found in Australia, Brazil, Canada, Russia, Spain (Andalusia), Sri Lanka and the United States. It is commonly found as Yellow-green, green, brownish-red or reddish brown in color. It sits at 7.5 on the MOHS scale making a durable gem however it is generally not used in jewellery because f the limited supply. This gem does not have any known treatments so you can be sure that you will be buying a natural untreated gemstone.