Hidden Gems

Hidden Gems

Bunny Mellon's Magnificent Blue Diamond Sells Once Again

A pear-shaped diamond that belonged to the famous horticulturalist has sold for the second time since her passing—but the second auction was less successful than the first

Lauren Kiehna's avatar
Lauren Kiehna
Nov 29, 2025
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Today’s article is a special one: my annual bonus piece written for subscribers at the Founding Member tier. Subscribing to Hidden Gems at that level is such a generous gesture of support: a clear indicator that you enjoy what I do and want to read more. I could not be more appreciative of your patronage! In gratitude, today’s article about Bunny Mellon’s magnificent blue diamond is just for you.

Christie’s

In September, a press announcement from Christie’s dropped in my inbox, promising yet another sale of a big, expensive colored diamond. Pink and blue diamonds seem to have been all the rage with the auction houses in recent years, bringing in huge sums of money from deep-pocketed buyers. I scanned quickly through the images and was almost ready to move on when I read the name of the diamond’s original owner: Bunny Mellon.

My immediate jewelry association when I hear Bunny’s name is Tiffany and Jean Schlumberger. When I gave a talk at the Tuckahoe Woman’s Club in Richmond, Virginia, in 2021, the wonderful ladies of the club took me to the fabulous Virginia Museum of Fine Arts. I was immediately excited to see the museum’s collection of Fabergé pieces, especially the imperial Easter eggs, but I ended up being absolutely captivated by the collection of Bunny’s pieces in the museum’s Mellon Schlumberger Galleries. (The Flower Pot! The Breath of Spring Necklace! I was so entranced that I bought the collection coffee table book and hauled it back to St. Louis.)

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