These are colorful, blown-glass glasses. The artist's name is engraved on the bottom. They appear to be hand-blown, with small bubbles and imperfections. They are small in size and fit perfectly in one hand. They feel substantial, not flimsy. I think they are a good size for a rocks glass. Approximate size: Diameter: 6.7cm Height: 7.0cm They have been stored at home, displayed on a shelf. There are no chips or scratches, but there may be some minor scuffs that I have overlooked. Please check the images and understand before purchasing. I have many other items for sale, so combined shipping is possible. Please contact me in advance, as the shipping cost may be reduced.