Ms. First sets her heart-shape stones into minimalist designs, making the gem the focal point, like the Honor’s Baby Blue Necklace ($789), named for Ms. First’s goddaughter, which has a 1.8 ...

Among the most well-known lockets is the one retrieved from The Titanic—not exactly the heart-shaped blue diamond necklace that went by the “Heart of the Ocean” in the famous fictional love ...

A 4.05-carat heart-shaped fancy blue diamond pendent necklace (about $1 million to $1.6 million) will also be on the block, as well as an 5.83-carat oval fancy light blue diamond with heart-shaped ...

Each component of the necklace was created over 4,000 artisan ... The centerpiece is a mesmerizing heart-shaped blue diamond, encircled by a lavish arrangement of portrait-cut diamonds.

in a heart-shaped necklace created by Roger Scemama. Saint Laurent was so fond of the coeur fétiche, as the original and its subsequent iterations were known — variations on an asymmetrical ...