Mix Packs of Potomac Crystal Rivoli 10mm - These high quality rivoli feature a pointed foiled back to increase the reflection and add dazzling sparkle to your projects. These crystals have no holes and can be used with a variety of bead weaving and wire working techniques to include them into your designs. Be inspired and get creative with the many sizes and colors available. They measure 10 mm and are packed 5 per color.