Garnet pegmatite and allied rock types and in certain low grade metamorphic phyllites. Spessartine of an orange-yellow is found in Madagascar. Violet-red spessartines are found in rhyolites in Colorado and Maine. Blue pyrope–spessartine garnets were discovered in the late 1990s in Bekily, Madagascar. This type has also been found in parts of the United States, Russia, Kenya, Tanzania, and Turkey. It changes color from blue-green to purple depending on the color temperature of viewing light, as a result of the relatively high amounts of vanadium (about 1 wt.% VO). Other varieties of color-changing garnets exist. In daylight, their color ranges from
GemStone IV 1995, just after the de-ICEing process. It had already become available on CompuServe and Prodigy before that. When AOL switched to flat-rate pricing, "GemStone" did over 1.4 million customer-hours in a single month and was attracting 2,000-2,500 simultaneous players. Simutronics launched a web portal in 1997, and started phasing customers off of the online services and onto the web interface, although it would take several years before the last of the online service portals were closed. "Computer Gaming World" in 1991 stated that "Gemstone III" was a good example of the best and worst aspects of online play. The reviewer