Quark: An elementary particle and a fundamental constituent of matter. Quarks combine to form composite particles called hadrons, the most stable of which are protons and neutrons, the components of atomic nuclei. Due to a phenomenon known as color confinement, quarks are never found in isolation; they can only be found within hadrons. For this reason, much of what is known about quarks has been drawn from observations of the hadrons themselves.

Black retaining rings, 18ga black wire, 28ga silver plated wire, gunmetal and silver plated chain and air blue opal Swarovski crystals

Length: 2 inches
Sterling Silver French Hooks for Pierced ears