This is such a pretty diamond engagement ring! The ring is 10k yellow gold with a solitaire diamond that has 3 small diamonds on each side.
I took it to my local jeweler for a verbal insurance/replacement appraisal:
She did not measure the diamonds, just a visual inspection and said that the center stone is approximately .12 ct. with the side stones totaling approximately .06 ct. Stated that color is G-H and clarity is SI2. Insurance replacement value is $450-$475.
Remember that this is insurance replacement value -- this value can vary by location and by jeweler.