Garnet not like sapphire blue in subdued daylight but more reminiscent of the grayish blues and greenish blues sometimes seen in spinel. However, in white LED light, the color is equal to the best cornflower blue sapphire, or D block tanzanite; this is due to the blue garnet's ability to absorb the yellow component of the emitted light. Pyrope is an indicator mineral for high-pressure rocks. The garnets from mantle-derived rocks, peridotites, and eclogites commonly contain a pyrope variety. Spessartine or spessartite is manganese aluminium garnet, MnAl(SiO). Its name is derived from Spessart in Bavaria. It occurs most often in granite
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,