Stunning and stylish, the Square Spike Sew-on Stone makes a wonderful design statement. Simply sew it onto apparel, shoes or accessories. These high, pointed crystals offer a glamorous alternative to traditional metal spikes, giving a 3D, edgy look with a sparkly twist. Apply using a synthetic multifilament thread with a thread count of Nm 50-80. (Avoid monofilament and pure cotton yarns due to their limited abrasion resistance.) The Spike Sew-on Stone's hole is positioned on the back of the crystal, which means that the thread is not obviously visible. With its chic square base and impressive crystal volume, this Sew-on Stone is a seriously striking embellishment.