A pulsar (short for pulsating radio star) is a highly magnetized, rotating neutron star that emits a beam of electromagnetic radiation.
Tourmaline is the most colorful of all gemstones. It occurs in all colors, but pink, red, green, blue and multicolored are its most well-known gem colors. Scientifically, tourmaline is not a single mineral, but a group of minerals related in their physical and chemical properties.
Because of all the different colors of Tourmaline, it can be confused with numerous gemstones. The most prevalent Tourmaline gemstone colors and those they can be confused with are listed below: Green Tourmaline - Emerald, Peridot, Demantoid, and Tsavorite. Red Tourmaline - Ruby, Spinel, Garnet.