Picchiotti expandable mixed diamond ring in 18-karat white gold. 26 emerald-cut diamonds at center; 4. 38 total carat weight. 52 round diamonds at ring edges; 2. 86 total carat weight. 78 total diamonds; 7. 24 total combined carat weight. Expands between US ring sizes 6. 25 to 11. 5. F-G/VVS-VS diamond color and clarity.