Huge opal sells for $125K at Alaska auction

JUNEAU, Alaska

One of the largest opals in the world was sold for $125,000 at auction in Alaska on Feb. 20.

The opal, dubbed the “Americus Australis,” weighs more than 11,800 carats and is one of the largest gem-quality opals in existence, according to the auction house Alaska Premier Auctions & Appraisals. It also has a long history.

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 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.

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.

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.”

“He entrusted me to figure out which direction we wanted to go to part with the stone,” von Brandt told The Associated Press.

Nick Cline, a partner and appraisal specialist with Alaska Premier Auctions & Appraisals, said the family has documentation surrounding the provenance of the opal. As part of his research, he contacted Fiona Altmann, granddaughter of John Altmann and general manager of Altmann + Cherny in Sydney, Australia.

Altmann said her grandfather, in his business dealings, made regular trips to Europe and the U.S.

The auction house said the stone was discovered in the same field in Australia as the opal known as the “Olympic Australis,” which weighs 17,000 carats and is on permanent display in Altmann’s shop.

The auction company sought a minimum bid of $125,000 during the auction. Cline said it’s a “calculated risk,” with the company going with what it sees as a conservative approach in hopes of garnering the most attention. It had targeted a sales price of $250,000 to $350,000, Cline said.

The sale includes a smaller piece of the opal that von Brandt said his father cut off to be worn or displayed.