SWAROVSKI ELEMENTS 6mm 6328 Xilion Bicone pendant. This crystal pendant has the same shape as the XILION bead. Available in Crystal AB and Violet and also in 8mm. They have an approximately 0.8mm hole. These top-drilled Swarovski crystal pendants add movement and interest to your jewellery designs they are perfect for dangles on chandelier earrings, lariats or charm bracelets. Crystal AB is crystal with a coating on one half that reflects light with a yellow and blue tinge, like the surface of a bubble.