Jackpot Thundereggs from Nevada are not famous for their content of beautifully banded agate or their coloredness.In deed the agate is banded not parallel, so the agate shows up as so-called flame agate, however only in grey-blue and white tones. The special at this usually dark-brown, aphanatic textured thundereggs is their high luminescence activity in the UV range. The agate shines greenish-yellow and possibly in the cavity contained calcite reacts reddish-orange in long-wave UV light.