Note that this is a size 6.75 ring (US/Canadian size). This is a unique ring that will be the one shipped.

Black onyx ring set in 92.5 sterling silver, oval shape

Stone size with silver about : 11 mm X 9 mm

Weight: 2.6 grams

code 520

RING SIZE CONVERSION CHART LINK:
http://findmyringsize.com/en/conversiontable.aspx

Note that you can find other charts on google