細節
A BELLE ÉPOQUE COLORED DIAMOND AND DIAMOND RING, BY J.E. CALDWELL
Set with a marquise brilliant-cut fancy to fancy intense blue diamond, to the circular and old-cut diamond surround, pierced gallery and shoulders, circa 1915, ring size 7, mounted in platinum
Signed J.E.C Co. for J.E. Caldwell, no. G 257
Accompanied by report no. 15223652 dated 29 June 2006 from the GIA Gemological Institute of America stating that the diamond is fancy to fancy intense blue, natural color