Solitaire Engagement Ring18K yellow gold and platinum solitaire ring designed to hold a 2. 00 carat emerald cut center. Features a classic 4 prong setting and a 4mm wide band. 18K yellow gold and platinum solitaire ring designed for a 2. 00 carat emerald cut center (crown size), set in a classic 4 prong setting. Features a 4mm wide band. Center sold separately. Available by special order in other metals, shapes, and sizes.