Boccia titanium small polished rose gold-plated heart shaped stud earrings. Size: 8.5Mm x 8mm all titanium components of boccia watches, jewelry and accessories are made of pure titanium (unless otherwise noted), including the crowns, buttons of chronographs, link bracelets, flex bands, buckles of leather straps, earring backs, and clasps. Mesh bracelets on watches are made of stainless steel. Titanium is strong, very light, corrosion resistant, and friendly to the skin. All boccia watches are water resistant to at least 99 feet, and carry a two year warranty.