This Carl Blackburn custom engagement ring is centered on a remarkable 3.02-carat antique cushion-cut diamond, set in softly glowing rose gold.

From this angle, the design’s gentle taper and smooth shoulders create an elegant visual flow toward the center stone.

The warm metal enhances the diamond’s old-world character, while the broad, open facets reflect light with a distinctive antique sparkle.

Understated and refined, this diamond ring feels romantic, timeless, and quietly substantial.