Measures: 12mmx 15mmBeautifully set in Solid Sterling Silver.Encased in a beautiful gift box with bow. Real Moissanite vs Simulated Moissanite vs Cubic Zirconia-Real Moissanite refractive index of 2.65-Simulated Moissnite refractive index of 2.39 -Cubic Zirconia refractive index of 2.15 -Cubic Zirconia which can turn cloudy over time-Simulated Moissanite has fire and texture that is very similar to that of natural diamond -Simulated Moissanite is about as hard as Cubic Zirconia Feedback： Feedback is very important for us, please don't leave a Neutral or Negative feedback before you contact with us。 We believe that a good communication will be helpful for solving the problems. Wish you will have a pleasure shopping experience ! Shipping: All orders are shipped within 1 business day (excluding US Holidays) All orders are shipped from the United States: State of Texas Return: No Questions Asked 30-Day Return Policy Customer Service: 9am to 5pm EST Monday-Friday (excluding US Holidays)