Here's a very cool vintage diamond. It appears to be a genuine antique cut, in very good condition. There's a tiny abrasion on the girdle- but otherwise it's perfect.

"Circular Brilliant" is a stone cut between the time of Old European and Modern round brilliant, often called a Transitional Cut by many.

They had gotten the technology down to achieve smaller culets, but you've still got those glorious chunky facets on the pavilion, sparking fires all over the place.

High color antique diamonds are really hard to find - and this one qualifies.

Really clean stone as well.

I really love this one.

Please enjoy this GIA article on the history of the round cut diamond: Describing 58-facet Round Brilliant-Cut Diamonds at GIA.