Thank you for viewing. Full Eternity SONA Diamond Ring (Artificial Diamond) Platinum Coating This full eternity ring features a dazzling array of 4mm diameter SONA diamonds. It's a simple yet impactful piece. Perfect for layering with other rings. Brand new, unused. ◯ Product Details ◯ Size: 12 Color: Platinum Coating Material: S925 Stone: SONA Diamond Stone Size: 4mm diameter Ring Width: Approximately 4mm SONA diamonds are artificial diamonds. They are stones known for their beautiful brilliance.