The recognized varieties are topazolite (yellow or green), demantoid (green) and melanite (black). Deposits are also found underground up to 3 meters deep in the demantoid placier. In all, there are five deposits of demantoid in this area. Around 2009, there was a significant discovery of demantoid and andradite garnet in Madagascar. Russian demantoid often contain inclusions of chrysotile, which is a type of asbestos. Demantoid also has a high refractive index of 1.80 to 1.89.