The Chantilly | AsscherAsscher Cathedral Engagement Ring with Floral Prongs and Diamond Accents Where whimsy meets precision. Take the cake in the Asscher Chantillya cathedral solitaire engagement ring that blends timeless design with playful detail. Round and baguette diamonds dust the shoulders, while a bouquet of marquise prongs cradles the Asscher cut center stone. Floral inspired and full of flair, this unique solitaire is elegant, unexpected, and anything but ordinary.