It is fully assembled with individually made pieces in 18 karat solid yellow gold. Mount in the center, with an oval sugarloaf cabochon cut (13 x 20 x 12 mm ) of a natural blue Chrysocolla of 25 carats. The Chrysocolla gemstone is deep to medium turquoise blue with black rock matrix and good luster. Surrounded by 6 four-prongs settings, mounted with calibrated round brilliant cut diamonds, with a combined weight of 0.42 carats, F color, VS-1 clarity Has a total weight of 21.5 Grams and the actual size is 6.5 sizable. The top view measures are 28 mm by 22 mm and raise 18 mm over the finger. Stamped, with the maker's mark, the gold and platinum assay hallmarks and signed, "G. WEIL PLAT 18 CT". Very good conditions. Upon Request, Auction House may provide ring resizing or/and appraisal. This will carry an additional cost. Appraisals are made by our in house GIA certified Gemologist.