Swarovski Crystals Bicone Beads in Crystal Electra are available in 4 & 6mm...Super pretty, really amazing clear, yet silvery with an AWESOME colorful coating... Swarovski says it best:-):
From Swarovski: Electra is saturated with multi-hued glints of blue, pink, purple, green and silver to exude shades of dramatic brilliance. To create this exclusive product, Swarovski® crystals are shipped to a third-party vendor where they receive a transparent custom coating to add shimmering translucent color. This process results in a beautiful range of reflective colors that may vary from drop to drop. The electra coating is sensitive to friction and can be scratched or marred with little pressure.