Mutant flower Ring by Pia Glassworks. This ring is handcrafted with the flameworking technique in solid glass. Made of Borosilicate glass. SPLIT Size USA UK EU JP Diameter (mm) Circumference (mm) 1 4.5 I 48 8 15.3 48.1 2 6 L 52 11 16.5 51.8 3 7.5 O 56 14 17.8 55.9 4 9 R 60 17 19.1 60.0 5 9.75 S 62 18 19.7 61.9 6 10.5 T.5 64 20 20.3 63.8 SPLIT This item is in stock and will be shipped within 7 working days from Spain. EU shipping: £10 Global shipping: £15