18ct white gold aquamarine and diamond three stone ring.  Central pear-shaped aquamarine, with pear-shaped diamond set either side.  Round brilliant-cut diamonds set around the edge of the settings. Plain shank.
 
Pear Shape Aquamarine 14.4 x 9.25mm, 4.01ct 
Pear Shape Diamonds 6.3 x 4.0mm, total weight 0.71ct
Round Brilliant-cut Diamonds total weight 0.28ct
Finger Size Q