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
Ron Stone (bishop) Ron Stone (bishop) Ronald Francis "Ron" Stone AM (born 10 September 1938) was the tenth Bishop of Rockhampton in the Anglican Church of Australia from 1996 to 2003. Stone was educated at Taylors College, Melbourne and ordained in 1963. His first post was as a curate at Junee, after which he was priest in charge of Kameruka. He was rector of Kerang and then the Archdeacon of Bendigo. He was ordained to the episcopate as an assistant bishop in Tasmania before becoming Bishop of Rockhampton in 1996. He retired from this position in 2003 and is currently the vicar-general in