This is a special beauty. Though the crest has worn a bit from patina (though there are a few flakes of blue) the ring itself is a brilliant piece of jeweling with a sterling silver base and 10k gold details (1/7 of the weight of the ring is 10k gold). Just a real stunner.
Ring size 12
Unless otherwise indicated, rings should be resizable by your local jeweler for a very modest cost (usually $20 or less, unless you're dramatically enlarging a gold ring). You can find your ring size with this online tool or get a free ring sizer here.