Happy Easter! A collection of 850 mineral eggs carved in the renowned gem-cutting center of Idar-Oberstein, Germany is also expected to draw attention. Estimated at $150,000-200,000, the group was formed over a 40-year period by noted gemstone carver, Dieter Jerusalem, now retired. It includes pink tourmaline from California and other precious materials such as morganite, amber, aquamarine and many minerals from mines now long closed.