Mineral site, and from there further subdivided by the chemistry of the W site. The Y and Z sites can accommodate a variety of cations, especially various transition metals; this variability in structural transition metal content gives the tourmaline group greater variability in colour. Other cyclosilicates include beryl, AlBeSiO, whose varieties include the gemstones emerald (green) and aquamarine (bluish). Cordierite is structurally similar to beryl, and is a common metamorphic mineral. Sorosilicates, also termed disilicates, have tetrahedron-tetrahedron bonding at one oxygen, which results in a 2:7 ratio of silicon to oxygen. The resultant common structural element is the [SiO] group. The
Gemstone Warrior It was followed by a 1986 sequel, "Gemstone Healer", also created by Paradigm. The player has to recover the Gemstone, a relic of incredible power forged by the gods and focusing the natural magic of the world. This, they entrusted to Man alone and for a time, there was great prosperity and peace. But the Demons, led by Nicodemius, had managed to boil to the surface and take the Gemstone. Unable to destroy it, Nicodemius fragments it into five pieces and hide them in the Labyrinth, buried deep within the Netherworld. Going into the Netherworld, the protagonist must find and