Great agate tower with an unusual grain

An agate tower from Brazil and Botswana. The tall columnar shape features an unusual grain, not classic parallel bands, but swirling and wavy lines.

Such grain patterns document unusual solution flow conditions during geode formation. Flowing solutions instead of calm sedimentation leave behind these swirling patterns.

In the collector's market, unusually patterned agates have their own premium classification. The tower shape accentuates the grain vertically.

Botswana material is often cut and polished in Brazilian workshops. The narrow columnar geometry makes the piece a unique display form.

A collector's item made from Botswana material and Brazilian craftsmanship, featuring unusual flow patterns and vertical tower geometry.