This Ocean Gypsy Amethyst Blue Swarovski Crystal Sterling Silver Ring in a surfboard shape is simply majestic. The Purple colour is a beautiful deep mystical Amethyst colour. The crystal is 1cm in size Amethyst is the birthstone of the Zodiac sign Pisces 19th Feb to 20th March. Swarovski Crystal is a high-quality crystal glass made in Austria since 1895. Made from 925 Sterling Silver and Turquoise Blue Swarovski Crystal. Comes in an Ocean Gypsy Jewellery Bag Note; also available in Sapphire Blue & Turquoise see our online store To Measure for the size of the ring; To measure for your new ring; Simply wrap a piece of string or paper around the base of the finger, then mark with a pen where the two ends meet. Lay the string or paper out and measure it using a ruler in mm. Note the measurement down. Then choose the closest measurement on the ring chart below. Size Diameter (mm) Circumference (mm) 6 16.5mm 51.9mm 7 17.3mm 54.4mm 8 18.2mm 57mm 9 18.9mm 59.5mm 10 19.8 mm 62.2mm