A sphere is a perfectly symmetrical geometrical object. In non-mathematical usage, the term is used to refer either to a round ball or to its two-dimensional surface.

Ernest Klatt, the founder of Ruby City Gems, created this "gem" of a collection of perfectly formed spheres for everyone to enjoy.  There are 2 ceiling to floor cases full of these beauties, and must be seen in person to full appreciate the time and skill put into each piece.