SWAROVSKI ELEMENTS 4mm 5000 round faceted bead. These crystal beads have 25 hexagonal facets and are available in a range of 13 colours. The hole size is approximately 0.9mm. Also available in 2mm, 3mm, 5mm, 6mm & 8mm. These 4mm Swarovski crystal beads are the most popular size proving their versatility for most projects. They work especially well in tiaras and bracelets. To give an idea of the difference between the sizes please see the additional image showing all the sizes photographed together. Siam is a rich transparent bright red.