This Glass Paper Weights have a recessed bottom (approx. 1/8"). The bottom recess is for your needlework, artwork, stamps, dried florals, photos, ecc. A quick project. Makes a great gift. Design size 2,12 x 2,87". Includes a precut cork backing and Pres-On insert for easy finishing. Some bubbles called "seeds" are inherent in handmage glass items.