Large agate slice, gilded, in a rotating stand

A large agate slice from Brazil, gilded, presented in a rotating stand. The polished cut surface shows the concentric banding pattern of the geode mineralization.

Agate is a banded chalcedony variety, a microcrystalline quartz aggregate. The concentric lines document alternating dissolution phases during geode filling. Each band width corresponds to a geochemical phase.

The gilding of the cut edge is a curatorial staging decision. The warm golden yellow contrasts with the grey-banded agate cut surface and defines the slice as a designed collector's item.

The rotating stand allows for 360° presentation. Brazilian agates from Rio Grande do Sul provide the highest quality material in this slice size. Grinding, polishing, and gilding are carried out in specialized workshops.

A Brazilian collector's item with a curatorial gold setting and rotating gallery presentation.