Emeralds, sapphires and other coveted stones highlight Aug. 23 sale

On Tuesday, August 23, starting at 1 pm Eastern time, Jasper52 will conduct a sale of Classic to Modern Jewelry and Stones. Absentee and Internet live bidding will be available through LiveAuctioneers.

Outsize gemstones, some loose but most set into jewelry, appear throughout the 300-lot auction. Of particular note is a massive 140.01-carat aquamarine strung on an 18K white gold necklace with a platinum frame; a 49.73-carat unheated star sapphire in a sugarloaf cut, showcased in an 18K white gold ring; another ring of the same precious metal, centering a sapphire, this one a deep green-blue 17.64-carat natural stone in an octagonal emerald cut; and an absolutely huge loose cushion cut natural aquamarine that weighs 157.55 carats.

Platinum estate pin with diamonds and six carats of Colombian emeralds, est. $12,000-$14,000

View the auction here.

Learn more about the auction on Auction Central News.