Sterling Silver Simulated White Opal Tennis Style Adjustable Pull-string Bolo Bracelet. Simulated Opal Gemstones, Tennis Style. Adjustable Bolo Bracelet, Adjusts up to 10 Inches. Tanish Free & Nickle Free. Free 2 Day Shipping with Amazon Prime, Comes Packaged in a Jewelry Pouch. Lovve Offers a Beautiful Collection of Gemstone, Fine, Fashion & Travel Jewelry.