WELCOME! This sterling silver ring has a large blue stone measuring 21.5mm high. I am not certain of the composition of the stone as it seems to have a less dense quality that typical turquoise. The stone is turquoise blue with some lighter shades and dark spots that look organic. Please see my many photos. The ring has a large fan like detail on each side of the shank with squiggly lines and long diamond shapes. The ring is size 12.5 - 12.75. It weighs 11.92 grams. Not marked but tested sterling silver. The ring is in nice, sturdy condition. The stone does not have any apparent flaws. I wish I knew more about the ring, but hopefully my many photos will be helpful. Thanks for looking! Please message for additional information or pictures and ask any questions before buying. From a smoke free home. Check out our other items! Be sure to add us to your favorites list! Thank you for viewing our auction. Stop in again. We have a huge collection of vintage antique jewelry and collectibles. Have fun and happy bidding! Ohio residents pay applicable sales tax.