This is one heck of a piece!! Beautiful inlay of Emerald Valley Turquoise (the green), coral, onyx, spiny oyster shell & gold lip mother of pearl. Just beautiful earthy colors!! It is from the Whiterock collection. Signed Whiterock & sterling. It weighs 83.3 grams! The opening is 1 1/8" & 1 1/4" wide from top to bottom. Fits me at a 6 1/2 to 7" a bit large. should fit a 7 1/2 to 8 1/2" best. Retails right around 1 grand! My Price... drum roll....