An Asscher Cut Diamond
Natural Unheated Ceylon Sapphire and Diamond Ring | From a unique collection of vintage three-stone rings at https://www.1stdibs.com/jewelry/rings/three-stone-rings/
This is Treasure Chest - a custom made engagement ring by Salt + Stone, featuring purple sapphires and diamonds in white and yellow gold.
Mariah Carey wears her 35-carat diamond engagement ring by Wilfredo Rosado. (Photo by Venturelli/Getty Images for Bulgari)
Beyonce wears her 18-carat emerald cut diamond engagement ring by Lorraine Schwartz. Clive Brunskill/Getty Images