Gemstone the stone such as color zoning (the uneven distribution of coloring within a gem) and asteria (star effects). The Greeks, for example, greatly valued asteria gemstones, which were regarded as powerful love charms, and Helen of Troy was known to have worn star-corundum. Aside from the diamond, the ruby, sapphire, emerald, pearl (not, strictly speaking, a gemstone), and opal have also been considered to be precious. Up to the discoveries of bulk amethyst in Brazil in the 19th century, amethyst was considered a "precious stone" as well, going back to ancient Greece. Even in the last century certain stones such
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,