The Galaxy Opal is the world's largest polished opal, certified by the Guinness Book of World Records in 1992.[1] It was found at the Boi Morto Mine in Brazil in 1976. The finished opal weighs approximately 3,749 carats, or 0.75 kg. It was carved from a grapefruit-sized piece of rough stone weighing 5,205 carats by Scott Cooley into a shape resembling a child's head. The weight of the finished stone was beyond the capacity of any gem measuring scale at the Gemological Institute of America and an approximation of its weight in carats had to be determined using a postal scale. The stone measures 14.0 x 10.2 x 4.1 cm (5-1/2 x 4 x 1-5/8 in). It is currently part of a private collection.
^"The Guinness book of records, 1993" October 1992, ISBN0-85112-978-1, p.22
External linksedit
Photograph of Galaxy Opal
December 02, 2023
galaxy, opal, world, largest, polished, opal, certified, guinness, book, world, records, 1992, found, morto, mine, brazil, 1976, finished, opal, weighs, approximately, carats, carved, from, grapefruit, sized, piece, rough, stone, weighing, carats, scott, coole. The Galaxy Opal is the world s largest polished opal certified by the Guinness Book of World Records in 1992 1 It was found at the Boi Morto Mine in Brazil in 1976 The finished opal weighs approximately 3 749 carats or 0 75 kg It was carved from a grapefruit sized piece of rough stone weighing 5 205 carats by Scott Cooley into a shape resembling a child s head The weight of the finished stone was beyond the capacity of any gem measuring scale at the Gemological Institute of America and an approximation of its weight in carats had to be determined using a postal scale The stone measures 14 0 x 10 2 x 4 1 cm 5 1 2 x 4 x 1 5 8 in It is currently part of a private collection See also editList of individual gemstonesOther notable individual opals Andamooka Opal Flame Queen Opal Glorious Jubilee Halley s Comet Opal Olympic Australis OpalReferences edit The Guinness book of records 1993 October 1992 ISBN 0 85112 978 1 p 22External links editPhotograph of Galaxy Opal Retrieved from https en wikipedia org w index php title Galaxy Opal amp oldid 1146469813, wikipedia, wiki, book, books, library,
