Year: 2019 This is an authentic VAN CLEEF & ARPELS Platinum Diamond .31ct Bonheur Solitaire Engagement Ring 52 6. The ring is crafted of platinum and features a round brilliant cut diamond, approximately .31 carat, with E color and VVS2 clarity. Follow this item for alerts. Van Cleef & Arpels is a registered trademark of Van Cleef & Arpels. FASHIONPHILE is not affiliated with Van Cleef & Arpels.