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
Operation Gemstone Operation Gemstone In the context of the Watergate scandal, Operation Gemstone was a proposed series of clandestine or illegal acts, first outlined by G. Gordon Liddy in two separate meetings with three other individuals: (1) the then-Attorney General of the United States, John N. Mitchell, (2) the-then White House Counsel John Dean and, (3) Jeb Magruder, an ally and former aide to H.R. Haldeman, as well as the temporary head of the Committee to Re-elect the President, pending Mitchell's resignation as Attorney General. The first meeting occurred in the Attorney General's Washington, D.C., office at 11:00 a.m. on January 27,