This belonged to my Mother in Law so, I know the Full History. She and my Father in law took a trip to China in the 70s and she purchased this as Top End Jadeite. It's Apple Green with some White and has magnificent Translucency, which you look for in Fine Jadeite. She never wears it and just wanted to contribute to my small business. It's in Mint condition as she had never worn it, just kept it wrapped up in a drawer. She'd really love for it to be worn by someone who'll cherish it. It measures 7/16" wide and the diameter is the standard opening of 2 & 1/2". You can feel the Quality of this Beauty! Item G17. I've been in Vintage/Antique jewelry for over 30yrs and I sell some new items occasionally. Feel free to ask questions. MY LISTINGS GENERALLY CONSIST OF MANY ONE OF A KIND OR VERY RARE PIECES, SOLID 14KT ITEMS, PLATINUM, 18KT, DIAMONDS, AMETHYSTS, TOPAZ, AGATE, EMERALDS, SAPPHIRES, OPALS, STERLING SILVER, VINTAGE AND ANTIQUE PIECES, BOLD AND RUNWAY-ERA. DESIGNERS SUCH AS GIVENCHY PARIS NEW YORK, CHRISTIAN DIOR FRANCE, FENDI ITALY, VALENTINO, KENNETH JAY LANE, CHANEL, ALEXIS BITTAR, YVES SAINT LAURENT, HENRI BENDEL, HERMES, JUDITH JACK, KATE SPADE, MICHAEL KORS, MIRIAM HASKELL, CORO,PRADA,HERMES,GUCCI.