Serinity hotfix crystals Raindrop (2304) Crystal AB are flat back crystals where the reverse side of the crystal has been pre-coated with a heat-sensitive glue. Serinity Raindrop crystals are shaped like a teardrop with a faceted surface that reflects light in a unique way, resembling a raindrop caught in sunlight. They have a flat top and a pointed end, with a curved, tapered shape.

Crystal AB is a colourless, transparent crystal bead that has a special coating that reflects light in a rainbow of colours, hence the name AB which stands for Aurora Borealis. It is a popular colour in the world of jewellery making and beading, as it adds a touch of sparkle and glamour to any design.