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A diamond ring with an incredibly rare Blue-Gray Diamond could fetch $350,000 at Heritage Auctions

The ultra-rare gem is flanked by flawless pear-shaped diamonds

Blue-Gray Diamond ring for auction

April 21, 2021: A spectacular Fancy Blue-Gray Diamond, Diamond, Platinum Ring could bring $350,000 or more at Heritage Auctions’ upcoming Spring Fine Jewelry Auction on May 3, 2021.

“Blue diamonds are very, very rare,” said Jill Burgum, Senior Director of Fine Jewelry at Heritage Auctions. “The color is impacted by the presence of boron in the lattice of the stone, which is formed extremely deep within the earth’s surface. It is rare to mine a blue diamond, let alone one with such distinct color, and this is a breathtaking example.”

The awe-inspiring ring features a pear-shaped fancy blue-gray diamond weighing 1.38 carats nestled between pear-shaped diamonds weighing a combined 1.41 carats, all set in platinum.

“Not only is the blue-gray diamond absolutely magnificent, but the stones on each side are D color, internally flawless,” Ms. Burgum said. “For someone looking for perfect stones, this ring fits the bill.”

Blue Diamond ring for auction

The ring is one of two blue diamond lots in the auction, which also includes a Fancy Blue Diamond, Diamond, Platinum Ring (estimate: $30,000-50,000). It features an oval-shaped fancy blue diamond weighing 0.73 carat, flanked by full-cut diamonds weighing a total of approximately 0.30 carat, set in platinum.

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