First picture taken with flash, second and third under normal lighting.
The band is wide and quite comfortable.
Note: Stone is an opal triplet rather than a solid opal. I've been advised that triplets only started appearing on the market in the 1960s, meaning that this piece could not pre-date the 1960s unless the stone was a replacement.
More vintage silver and gold jewelry at www.etsy.com/shop/greenlandturtle and www.etsy.com/shop/sterlingdelights/