3.5mm. These are very pretty vintage acrylic faux pearls. They do not have a hole. What a great deal, 144 pearls for $4.00! These beautiful lightweight vintage faux pearl no hole beads were found in the famous vintage bead hoard.
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.