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This polished pair of Fishhook Thundereggs features gray and reddish brown rhyolite with one large crack filled with banded agate in blue-grey and black. The agate section fluoresces strongly under UV light (pictured under 365nm).
Dimensions:
both halves 5.25" x 3.25" polished surface
2.5" and 2.25" deep
1lb 9.5oz and 1lb 12.2oz
Fishhook Thundereggs come from the Little Florida Mountains near Deming, New Mexico. These rhyolitic thundereggs can be partially hollow or completely filled. Quartz, calcite, chalcedony, and seams of faintly banded agate can all be found inside, along with yellow and red staining.