6" Polished Sagenite Agate Slab - Mexico

This is a gorgeous, 6" wide polished slab of sagenite agate that was collected from Mexico (likely Chihuahua). It is polished to a glossy-finish on one side and features radiating sagenite crystal formations that are surrounded in agate (chalcedony). A unique feature of this specimen is the pocket near its center that contains rutile crystals that are surrounded in chalcedony, resulting in these rounded mineral formations. It has been thin sliced so that it can easily be backlit.

An acrylic display stand will accompany your purchase.

Sagenite agate is a formation of agate that contains acicular (needle-like) formations of fanning sagenite crystals that have been encapsulated in a mass of pseudomorphic agate. This occurs when agate fills a cavity within rock that had prior formations of minerals, in this case being the golden sagenite crystal clusters.

Sagenite is a name that often refers to acicular rutile crystals, which in this case is accurate. The golden crystals within this specimen are technically rutile (TiO2) crystals.

Chalcedony var. Agate & Sagenite
6 x 3.3", .2" thick