Valley View thundereggs are rare, large thundereggs from Oregon and the size of each thunderegg will be from three pounds up to 5 pounds plus. (Stock 666) When ordering, place a minimum of order of 3 which means three pounds to receive one complete three pound thunderegg. A rhyolite matrix surrounds agate centers which will contain beautiful, unique agate patterns with no two alike. These are complete whole thundereggs. Slab in half for polishing on your flat lap or belt sander, etc., or slab to make unique cabochons and more. These are great fun to slab and find the hidden surprise.