The garnet group contains minerals with a cubic crystal system, and crystals in the form of rhombic dodecahedrons and trapezoëders. The nesosilicaten are of the general formula A3B2 (SiO4) 3. Shells may contain the chemical elements calcium, magnesium, aluminum, ijzer2 +, + ijzer3, chromium, manganese and titanium. Garnets do not show cleavage. The hardness is from 6.5 to 7.5, and shells can be transparent to opaque. The name "garnet" comes from the Latin word granatus, and refers to malum garanatum (pomegranate) is a plant with red seeds resembling found on many garnet crystals. Garnets are contrary to what is often thought, and the name suggests, is not always red, but may purple, red, orange, yellow, green, brown, black or colorless. In 1998 Bekily, Madagascar, for the first time found a blue-pink grenade. This variant is considered very rare. The six most common variants are pyrope, almandine, spessartiet, grossular, uvaroviet and andra diet. These come in two solid solution series: 1.De pyralspiet Group: pyrope-almandine-spessartiet 2.De ugrandiet group: uvaroviet-grossular-andra diet. Grenades are very common in the lower crust and mantle, thus playing a major role in the chemical understanding of the Earth. The grenade is one of the "nine gems" in Thai Order of the Nine Gems.
Gemstone therapy Garnet (Dutch)
Garnet mines woldwide.