You've probably heard of Erika Winters. She fits in well with the aesthetic of my SF jeweler, Eric Trabert, because she also has an appreciation for things from another time. She uses antique cut diamonds and is listed in The Jewelry Editor as one of the 5 antique-style engagement ring designers you need to know.
She uses vintage items such as Old European Cut diamonds, French Cut diamonds, and milgrain.
The Margot above is one of her signature engagement rings. I love how the large antique (OEC) diamond is offset by the delicate gracefully graduated diamonds on the side.
Some of her beautiful pieces below.