These stones work great with 2-part epoxy clay such as Crystal Clay or DeCore. Round pointed foil back cut crystal stones. Color: Light Colorado Topaz Quantity: 5 Grams (includes 4 sizes ranging from 2.5mm - 4.75mm) Round pointed back cut crystals are one of the most popular and versatile rhinestones. Our mixes come with various sizes of Preciosa chatons to embellish your jewelry designs. Item # 45-6702