Nick Cline, a partner and appraisal specialist with Alaska Premier Auctions & Appraisals, said the family has documentation surrounding the provenance of the opal. (Dana Fuentes/Alaska Premier Auctions and Appraisals via AP) Detail of one of the largest opals in the world, “Americus Australis,” which was sold for nearly $144,000 at auction in Alaska on Sunday, Feb. He said he went with Alaska Premier Auctions & Appraisals because he thought it would get more attention from the newer company than a larger auction house. Von Brandt said he brought it with him to Alaska over a year ago as he weighed the best approach to a possible sale. Guy von Brandt eventually moved to Oregon and kept the stone “kind of tucked away” for many years, von Brandt said. His father then branched out into furniture and displayed it at his shop. The family, with roots in California, exhibited the stone at gem shows for years, until the early 1980s, he said. “He entrusted me to figure out which direction we wanted to go to part with the stone,” von Brandt told The Associated Press. Von Brandt said the opal for decades was in the care of his father, Guy von Brandt, who decided it had been “locked up long enough, that it’s time to put it back out in the world and see what interest it can generate.” The opal specimen “Americus Australis.” (Dana Fuentes/Alaska Premier Auctions and Appraisals via AP) Von Brandt said the stone has been in his family since the late 1950s, when his grandfather bought it from an Australian opal dealer named John Altmann. The opal is larger than a brick and is broken into two pieces, which von Brandt said was a practice used decades ago to prove gem quality.
Most recently, it was kept in a linen closet in a home in Big Lake, north of Anchorage, by Fred von Brandt, who mines for gold in Alaska and whose family has deep roots in the gem and rock business. The opal, dubbed the “Americus Australis,” weighs more than 11,800 carats, according to the auction house Alaska Premier Auctions & Appraisals. Values are normally determined by the presence and nature of color flashes, except in the case of, where body color is most valued.A gemstone, billed as one of the largest gem-quality opals in existence, was sold for $143,750 at auction in Alaska on Sunday. Major suppliers include, Brazil, Ethiopia, Mexico, Peru and the United States. Despite its frequent use in, opal is not the greatest choice as a ring stone it is however, very-well suited for other types of, including, pins and. Opal is relatively soft, with a rating of 5.5-6.5 on the. However, with the advent of scanning electron microscopes, we now know that it is a result of diffraction, and is known in the gem trade as play of color. Opal's fire was long thought to be the result of iridescence. There are many varieties of opal, including black opal, white opal, common opal (potch), chocolate opal, boulder opal, opal doublet, opal triplet, fire opal and. They require special care to ensure their health and longevity. Opals are also the most delicate gems commonly worn.
No other gemstone has such rich and varied a folklore.
Opal More than any other gem, each is distinctly individual. CarGurus analyzes over 6 million cars daily.
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