Swarovski® Crystal 4mm Light Siam Briolette Bead - Style 5040. The Swarovski Crystal Briolette Bead is cut to intensify the crystal colors and makes the crystal look like sophisticated, perfectly faceted semi-precious stones. Use this simple yet elegant bead to create designs with an air of elegance and a lot of sparkle! These Swarovski beads offer the highest standard available on the market. The high-quality precision cutting and the clear through-hole achieve high brilliance and clarity. Sold individually.