The Swarovski 5328 4mm XILION bicone in crystal CAL is a unique addition to the Swarovski family. Each bicone has been given an opaque Comet Argent Light finish on one half, while the other half remains a beautiful, translucent crystal. These beautiful crystals are XILION cut, meaning they've been given 12 brilliantly cut facets to allow them to sparkle in a way never seen before. Pair these crystals with your favorite pendants to create a stunning necklace, or use them as focal pieces in your next earring design. Use only Swarovski crystals when you want to look your very best, as they're known the world round for their quality and beauty. NOTE: SWAROVSKI ELEMENTS is replacing their 5301 faceted bicones with the recently upgraded 5328 XILION bicones that feature 12 meticulously-cut facets that alternate in size. Check back frequently for the latest colors and sizes! This item replaces our previous 5301-CAL4 faceted bicone.