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

Rectangular crazy lace agate ring set in sterling silver

Approximate stone measurements: 16 x 13 mm

weight: 4.91 grams

code56

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

Note that you can find other charts on google