Cushion-cut sapphire, 7.44 carats, GIA Certificate #2185791664, estimate: $20,000-$30,000. Courtesy of Heritage Auctions

Cushion-cut sapphire, 7.44 carats, GIA Certificate #2185791664, estimate: $20,000-$30,000. Courtesy of Heritage Auctions

Cushion-cut sapphire, 7.44 carats, GIA Certificate #2185791664, estimate: $20,000-$30,000. Courtesy of Heritage Auctions

Cushion-cut sapphire, 7.44 carats, GIA Certificate #2185791664, estimate: $20,000-$30,000. Courtesy of Heritage Auctions

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