Forever One (D-F) Moissanite and Halo Diamond Engagement Ring 2 1/2 CTW 14k White Gold 14k White Gold Forever One DEF Colorless Moissanite and Diamond Engagement Ring Showcases one 7.5mm Forever One DEF Colorless moissanite center stone. Moissanite by Charles & Colvard. Certificate of Authenticy card included. Designed and made by Kobelli. Diamonds are 100% natural and conflict-free.