Preciosa Round non hotfix flatback crystals in Ruby are genuine Czech-made MAXIMA cut stones. Available from SS6 (2mm) to SS30 (6.4mm) in retail packs of 40 and 100 and wholesale packs of 288 and 1440. Ruby is a vivid pure red with a bright gemstone clarity. The smaller SS6 to SS12 sizes suit nail art, tooth gems and fine detail work, whi...