Harry Winston donated several more spectacular gems to the museum throughout his lifetime, each adding to the dazzling tapestry of the National Gem Collection.

Jackie Kennedy Onassis accepted a diamond and emerald engagement ring from JFK and a 40-carat diamond from Aristotle Onassis. Plus, a mystery engagement from a brief engagement before she met JFK.

In 1968, five years after JFK's death, Jackie married Aristotle Onassis. He proposed with a 40-carat marquise-cut diamond from Harry Winston.

The Winston Red Diamond and Fancy Color Diamond Collection are the result of 60 years of dedicated acquisitions by Ronald Winston and are now on display in the museum’s Harry Winston Gallery.

See every engagement ring ever given to contestants on "The Bachelor," "The Golden Bachelor," "The Bachelorette" and "Bachelor in Paradise.

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Jackie’s second engagement ring from shipping magnate Aristotle Onassis, a 40-carat Lesotho III diamond from Harry Winston, is also embedded in the history books.

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The ring, created by Harry Winston, was said to have cost $4 million more than 20 years ago and the publicity around it caused a surge in the value of blue diamonds.

In the tearful exchange, Harry presents his future bride with a 5-carat emerald cut Harry Winston ring, which was inspired by the one given to Elizabeth Taylor by Richard Burton in 1968.

At the same time, Lugano Diamonds topped off an ebony and diamond snake-inspired ring with a kite-shaped emerald set atop diamonds so their snow-setting can be seen through the emerald.