Tabasco Geode from Zacatecas, Mexico. These baby geodes, formally known as Illianites are the world's smallest geode formation. This geode pair has a small rind of agate with tiny quartz crystals in the center. They sparkle in the light, and are very colorful sometimes these little geodes have tube formations.

These are very rare because only one in ten that are mined actually form a hollow geode.

Size - 16mm x 10mm x 5mm - each half