They are AB color (iridescence) rhinestones strongly sticked onto 1/4 inch rhombic holes stretchy mesh fabric. It can be cut to appropriate size to
Exquisite AB Color Rhinestone Fabric Stretchy Mesh (15 inch by 12 inch, White)
White / Crystal Clear / Crystal AB Elastic Rhinestone X Fabric – Axiland Rhinestone Depot
White / Crystal Clear / Crystal AB Elastic Rhinestone X Fabric
Sew On Rhinestones Crystal AB Glass Beads Flatback White Stones
Axiland Rhinestone Depot
Crystal Hot-fix Mini Bag – Axiland Rhinestone Depot
OUTUXED 5040pcs Clear Rhinestones for Crafts, Flatback
Sew On Rhinestones Crystal AB Glass Beads Flatback White Stones
500pcs Spacer Beads Crystal AB Clear Color Sew on Acrylic
Crystal Clear DF Rhinestones – Axiland Rhinestone Depot
8x13mm Crystal AB Drop Transparent Ab Rhinestones For DIY Clothing
Axiland Rhinestone Depot
RHS-APL-013-SILVERWHITE-PAIR. Sew-On Clear Crystal Rhinestone
Crystal AB Rhinestones Mesh Fabric Sewing Elastic Trim - White