Silver Zircon Button 20mm Crystal Embellishments Sew on Clothing Buttons 1piece. Add a touch of glamour to your clothing with these exquisite Zircon Button Crystal Embellishments. The high-quality zircon material and sparkling crystal design make these buttons perfect for any special occasion attire, they can be easily sewn onto dresses, blouses, jackets, and more to elevate your style.