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.
Pink tourmaline usually commands a high price, especially the hot pink. The same is true for interesting bi-color and tri-color pieces, especially the very popular watermelon tourmaline, which combines red, green and sometimes white bands in the same stone.ot all tourmaline gems have the same value. Some varieties are especially rare and desirable, while others are almost as inexpensive as quartz. Interposed between these are a range of fascinating colors that represent some of the best value gemstones. Here's a quick guide to tourmaline value.