You'll need two matching 4mm Swarovski beads for each link. Faceted round or bicone beads were paired with all but the mother-of-pearl link where a Swarovski pearl was used and the carnelian, where red-orange glass beads were used.
Read through the directions before beginning the project.
Each finished bead link will be approximately 1-5/8" (41mm) long when using components from the materials list. Set out the components in a manner pleasing to you. This is a great time to raid your stash for pretty beads to go with the teardrop connector links.