Potomac Crystal Briolettes - Metallic Sky (Montana AB). Briolettes are a great way to add an elegant crystal element to your designs. Elongated, faceted and tear drop shaped, Potomac Crystal Briolettes will bring the bling to your beading projects. They are a top-drilled crystal drop bead that can be used as a bead or as a pendant. Have fun creating statement pieces with this colorful crystal. Briolettes measure 6x12mm with a .8mm hole and come in a pack of 25.