Here for your consideration is a nice 925 silver blue opal pendant. I am assuming this is a synthetic opal. The pendant is marked 925 and tested as such. The pendant measures 1 x 3/4". The chain is also marked and tested as 925 sterling silver and it measures about 17. 5" around. This is in good wearable vintage condition.

This item is sold from a vintage boutique in Stanton, Nebraska.