Gemmology: 6 precious stones that have hit the market recently

The National
  • At a whopping 887 carats, La Gloria is one of the largest rough emeralds in the world, overtaking the 857-carat Gachalá displayed in the ­Smithsonian ­Institution in Washington.
    At a whopping 887 carats, La Gloria is one of the largest rough emeralds in the world, overtaking the 857-carat Gachalá displayed in the ­Smithsonian ­Institution in Washington.
  • Part-owner by Gemfields, the Montepuez Ruby Mine in Mozambique is one of the most ­significant ruby deposits to have been ­discovered in recent times. Courtesy Gemfields
    Part-owner by Gemfields, the Montepuez Ruby Mine in Mozambique is one of the most ­significant ruby deposits to have been ­discovered in recent times. Courtesy Gemfields
  • A peacock pear from the Robert Wan group. Courtesy Robert Wan
    A peacock pear from the Robert Wan group. Courtesy Robert Wan
  • The Pink Star, the 59.60-carat, oval, mixed-cut pink diamond, is the largest internally flawless fancy vivid pink diamond that the Gemological Institute of America has ever graded. Courtesy Sotheby’s
    The Pink Star, the 59.60-carat, oval, mixed-cut pink diamond, is the largest internally flawless fancy vivid pink diamond that the Gemological Institute of America has ever graded. Courtesy Sotheby’s
  • The Stotesbury Emerald weighs about 34.40 carats and has been in the possession of some of ­history’s most avid jewellery collectors. Courtesy Sotheby’s
    The Stotesbury Emerald weighs about 34.40 carats and has been in the possession of some of ­history’s most avid jewellery collectors. Courtesy Sotheby’s
  • The Mountain Star Ruby collection collectively weighs in at 342 carats. Courtesy Guernsey’s
    The Mountain Star Ruby collection collectively weighs in at 342 carats. Courtesy Guernsey’s