Rhinestone Guy (RG) Cross Cut Triangle Shape is a larger, flat back square similar to Swarovski Sew On Triangle Art. 3270 or the Preciosa® Sew On triangle Art 3029 but without the sewing holes. It features multitude of facets that reflect lights in multiple directions. They are part of the collection of rhinestone luxury crystal (glass) shapes.
The stones are flat back and foiled for extra reflection, except for the Jet (Black) that is Un Foiled. These are machine cut glass (not acrylic).
These family of crystal is great for intricate designs and other glue on applications.