centering upon a marquise-cut diamond weighing 1.35 carats, within a double conforming surround of channel-set baguette diamonds, to the small marquise-cut diamond bail, the smaller diamonds altogether weighing approximately 2.00 carats, in platinum, with detachable brooch fitting ...Accompanied by SSEF Swiss Gemmological Institute Diamond Certificate no. 12720, dated 7 June 1979, stating Internally Flawless clarity and D colour.