4-5mm round. These are Moon Star Brand beads "made in Japan". Each bead is unique because they are hand made lamp beads. The sizes and shapes do vary a tiny bit. These remind me of Dinosaur Eggs. Don't know why, because I have never actually seen a Dinosaur egg. But if a Dinosaur egg is green with spots and really tiny, these would surely fit the bill. They are really pretty!
If you are not delighted with your beads and beading supplies, we will gladly give you a store credit, exchange , or a refund within 30 days of purchase. Please see our shipping & returns page for the full details.