The Spencer Tiara hasn't been publicly worn since Diana's death in 1997 Maria Mercedes Lara is the Senior Director of Digital Content Operations for PEOPLE. She has over 15 years of experience ...

She donned the Spencer Tiara, which features diamonds ... matching wedding band with a five-carat, emerald-cut diamond engagement ring. Princess Diana and Prince Charles married in July 1981.

as it's thought to have been the Greville Emerald Kokoshnik tiara, which Princess Eugenie borrowed from her grandmother just six months later." Prized as the most valuable item in the Royal trove ...