Lady Gaga

The partner: Taylor Kinney

The ring: A heart-shaped diamond, estimated six carats

The proposal: February 2015

The marriage: Called off

Lady Gaga and Taylor Kinney’s love story began on the set of her music video for “Yoü and I.” Their relationship quickly escalated from professional to romantic. Taylor proposed to Gaga with a breathtaking heart-shaped diamond ring boasting an estimated six carats. It dazzles with its size and clarity, reflecting the intensity of their bond.

This custom-designed piece reportedly cost upwards of $500k. Despite their eventual separation, the jewelry remains an iconic symbol of their relationship. After almost five years of being together, the couple never made it down the aisle. If even a heart-shaped diamond won’t seal the deal, then what will?