Marietta is a talented ceramicist carrying on a family tradition in Saint Paul, Minnesota. She has written about herself and her process for her store on Etsy. I have tried to make yarn bowls like this one as my inspiration and mine didn't look anywhere near as beautiful. It is not easy to cut and form that loop along the edge while the clay is still soft enough to allow it.
She has a great variety of wheel thrown ceramics for you to choose from here: blueroompottery
Or here on her own website: blueroompottery.com/