Rings › Aquamarine and shield diamond ring Image 1 of 3 Image 2 of 3 Image 3 of 3 Aquamarine and shield diamond ring £5,200.00 One Off piece3.50ct Santa Maria aquamarine, set with two shield cut diamonds 0.60cts. Ring is made from platinum. Get notified by email when this product is in stock. Purchase Added! One Off piece3.50ct Santa Maria aquamarine, set with two shield cut diamonds 0.60cts. Ring is made from platinum.