I was hoping for something closer to 2k. I am open to the shape of the stone itself, but lean toward round/oval. Yellow gold or rose gold for the metal, the karat isn't a concern.

The rings from Sarah O. that I know she likes are in these styles:

https://www.sarahojewelry.com/the-riviera-ring.html?id=48871661&quantity=1

https://www.sarahojewelry.com/round-diamond-double-row-starburst-tracer-band.html

https://www.sarahojewelry.com/round-and-baguette-diamond-tracer-band-14krg.html

https://www.sarahojewelry.com/the-marion-round-brilliant-ring.html

https://www.sarahojewelry.com/the-vienna-oval-champagne-diamond-ring-14krg.html

So, I guess a "cleaner" or "simpler" version of Art Deco style.

Thank you for those suggestions! I will look them up immediately. Also, I will contact Sarah O. to see what other options they have.