The mineral zircon, known as zirconium silicate, is commonly found as a minor constituent in igneous rock such as granites and some kinds of metamorphic rock. Gem quality zircon stones are usually rare. These gemstones are formed mainly in pegmatites (coarse-grained igneous rock) and in fissures.
Temperature: A copse is flaccid immediately after death, muscle stiffening, rigor mortis, commences after about three to four hours, reaches maximum stiffness after 12 hours, and gradually dissipates until approximately 48 to 60 hours (two and a half days) after death.
Did You Know? Rigor mortis, which translates from Latin as stiffness of death, sets in quickly and usually ends three or four days after death. The condition results from a lack of certain chemicals in the muscles; it may be affected by muscular activity before death as well as the external temperature.