Natural Cornflower Blue Sapphire 2.80 caratCornflower Blue Sapphire Weight : 2. 80 carat size 8. 8x7. 0x5. 40 mm This cornflower blue spinel you described sounds exquisite and ideal for a high end jewelry piece, particularly a ladies' ring. Here are the key features summarized and their implications: 1. Weight: 2. 80 carat This is a substantial size for a gemstone, making it quite noticeable and likely the centerpiece of any jewelry piece. 2. Size: 8. 8 x 7. 0 x 5. 40 mm These dimensions