Gemstone usually found in. For example, diamonds, which have a cubic crystal system, are often found as octahedrons. Gemstones are classified into different "groups", "species", and "varieties". For example, ruby is the red variety of the species corundum, while any other color of corundum is considered sapphire. Other examples are the emerald (green), aquamarine (blue), red beryl (red), goshenite (colorless), heliodor (yellow) and morganite (pink), which are all varieties of the mineral species beryl. Gems are characterized in terms of refractive index, dispersion, specific gravity, hardness, cleavage, fracture and luster. They may exhibit pleochroism or double refraction. They may have luminescence
Gemstone Healer Gemstone Healer Gemstone Healer is a computer action adventure game created by Canadian developer Paradigm Creators and published in 1986 by Strategic Simulations. It was developed by Trouba Gossen (who was also responsible for the graphics), Peter Lount (design and programming); with assistance by Kevin Pickell (porting to C-64). It is a sequel to "Gemstone Warrior". "Gemstone Healer" is a 2D action adventure title with the player controlling an armored figure that they would move from area to area in search of treasure and the way to heal the Gemstone. It uses cellular automata to generate maps. The game takes