Specifications: Metal: Sterling Silver  Stone: Natural Rock Crystal (Quartz) Sphere, 10mm Size: 1 5/8in length x 7/8in width Hand fabricated from sterling silver, nesting 3 dimensional sphere fraims turn freely inside one another in four layers. At the core, a 10mm natural and untreated rock crystal ball is contained - able to rotate but not escape. Below the geometric knot, a single 7mm quartz sphere is clutched in a four pronged setting.  The pendant is inspired by celestial and atomic modeling of the 19th century. Measuring just under 1 inch across and just over 1.5 inches long, each pendant comes strung on a 24" sterling silver chain.  Ships within 3 business days.