COUSIN-Jewelry Basics: Glass Beads. Making your own custom jewelry pieces is easy when you have beautiful glass beads to inspire you! The Jewelry Basics collection of beads can be mixed and matched in countless ways to create fantastic necklaces, bracelets, earrings, and matching sets. Beads are available in a wide range of styles, colors, and sizes so finding something that fits your style is a snap. This package contains 300 glass beads, each is 4mm in diameter. Imported.