The black rocks come from either of two species of garnet which are called pyrope and andradite the black gemstones of the latter being specifically called melanite. Garnet in general is the traditional and modern birthstone for the month of january both in the us and britain as well as for the zodiac sign aquarius. Black tourmaline gemstones are also available in various traditional and fancy shapes and a range of cutting styles. Black tourmaline gemstones are known as schorl and are opaque and when cut and polished schorl exhibits a vitreous to sometimes slightly resinous luster. Gemselect s black tourmaline gemstones are available as single stones.
Black garnet is not a common gemstone and is quite rare. There are a couple of black garnet varieties black andradite and black melanite. From the two black melanite is more commonly found in the jewelry world. Black garnet is not a common gemstone and is quite rare. The black rocks come from either of two species of garnet which are called pyrope and andradite the black gemstones of the latter being specifically called melanite.
