Antique diamond engagement ring

Antique platinum and diamond ring with 1.97 carats of diamonds. Center stone is 1.85 carats and has a GIA report. There are marquise and round diamonds on either side of the center stone. The ring has a knife edge band that flattens at the bottom which is very comfortable. Appraisal included. Size 7.25. Was purchased from Treasurly by Dima in NYC and only worn a handful of times since.