Serinity hotfix crystals Small Hexagon (2777) in Crystal AB are flat back crystals where the reverse side of the crystal has been pre-coated with a heat-sensitive glue. Serinity Small Hexagon shaped crystals feature a six-sided polygonal shape with flat surfaces and straight edges. The crystal's surface is intricately cut with multiple facets, creating a dazzling and reflective effect that sparkles when it catches the light.

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.