Tiffany & Co. by Don Berg geometric Architectural Geometric 7.75 Ring. Mint

Tiffany & Co by Don Berg geometric Architectural ring in .925 sterling.
Geometric ring designed by Don Berg for Tiffany & Co.
Beautiful sculptural piece, created exclusively for tiffany by Don Berg back in the 1973. Crafted with very bold details in solid .925/.999, with high polish finish.
Has a total weight of 19.6 grams and the actual size is 7.75 sizable.
The top view measures are 22 mm by 14mm and raise 12mm over the finger.
hallmark and signed, "TIFFANY & CO. AG .925