Serinity hotfix crystals Diamond (2773) in Crystal AB are flat back crystals where the reverse side of the crystal has been pre-coated with a heat-sensitive glue. Serinity Diamond shaped flat back crystals possess a precise and symmetrical diamond shape with a pointed top. These crystals are known for their ability to reflect light and create an eye-catching sparkle due to the specific arrangement of their facets.

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.