Preciosa Via Hotfix Flatback Rhinestones. One Of The World's Leading Manufacturers Of High Quality Cut Crystal Rhinestones. The Preciosa Viva Hot Fix Rhinestones Are Extremely Popular Due To Their Premier Sparkle and Faceting, and High Quality Glue At a Moderate Price Point. Preciosa Viva Rhinestones Have a High Quality Heat Activated Glue Applied To The Back and Can Be Easily Applied To Textiles. Great Clarity and Sparkling Brilliance. Choose Your Size. 144 Pieces Per Pack. Color: Black Diamond.