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 Healer although some do return to life such as Nicodemius himself who can be "killed" but may eventually return. The goal is to split the Gemstone on one of the altars that are in the game and the place the pieces on other altars and then "heal" them with the use of healing tools that are found throughout the Center. "Gemstone Healer" was much less successful than its predecessor, only selling 6,030 copies in North America. 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