All sizing is based on the internal ring diameter (across the middle). 

Our online products are displayed in US sizes. If you don't know your US size, see the below conversion chart.

For any other sizing questions please do not hesitate to contact us at info@blackdeville.com

 

 USA AU / UK EU INTERNAL RING DIAMETER - EDGE TO EDGE (mm)
6 M 52 16.5mm
7 O 54 17.3mm
8 Q 57 18.2mm
9 R 1/2 60 19mm
10 T 1/2 62 19.8mm
11 V 1/2 65 20.6mm
12 Y 68 21.5mm
12 1/2 Z 69 21.9mm
13 Z1 70 22.3mm
Z2 - -
Z3 - -
Black De Ville jewellery uses standard jewellery sizing however due to the hand made nature of the pieces the sizing can slightly differ. If the wrong size is ordered and the piece requires. a resize a fee of $50 applies. If you need a specific size please contact us at info@blackdeville.com