Serinity sew on crystals Rivoli (3200) in Jet Hematite UNFOILED are loose flat backed crystals that come with a thread hole, enabling the crystals to be sewn onto fabric. Serinity Rivoli shaped crystals are uniformly cut glass stones with facets that converge to a point. The underside of the crystal is foiled to reflect light and intensify the colour of the stone, creating a brilliant shine.
