Beautiful glass piece which I believe to be Kosta Boda and done by designer, MONA MORALES SCHILDT. My piece is not signed and Kosta sticker is missing but my understanding is that the larger paperweights were signed but these smaller versions often were not.
This puck-shaped piece is 1 3/4" diameter and height and is 1" deep. Excellent condition with no surface scratches that I see but I do feel one grain-of-sand size imperfection on an edge. Noted in photos with my finger or a toothpick head. It really is the size of a grain of sand and is not visible from the side of the paperweight - only from the top ... straight on. Please review photos closely and contact me with any questions.
Please view similar piece listed on Worthpoint as a reference:
https://www.worthpoint.com/worthopedia/kosta-mona-morales-schildt-roomjewl-50020556