BLACK ONYX HEXAGONAL RING SILVER-Our silver ring is adorned with semi-precious stones . Please indicate size while ordering or send us an e.mail. To take the size, simply wrap a thread around your finger. Measure the length of the thread to get the ring size. Sizes in respect to thread length are : Size 5 - 4.932 cms, Size 6 - 5.186 cms, Size 7 - 5.451 cms, Size 8 - 5.715 cms, Size 9 - 5.966 cms, Size 10 - 6.233 cms , Size 11 - 6.497 cms , Size 12 - 6.751 cms , Size 13 - 7.015 cms.