Montana Agate Montana Dimensions: 8.0 x 5.0 x 0.6 cm
A striking cut and polished Montana Agate specimen displaying exceptional translucency and dramatic internal patterning. When backlit, the chalcedony glows in rich shades of golden yellow, amber and fiery orange, surrounding bold areas of deep brown to nearly black mineral inclusions.
The specimen shows attractive fortification-style banding near the upper edge, along with fine dark dendritic inclusions concentrated through portions of the translucent chalcedony. The contrast between the creamy outer zones, warm orange-brown interior and nearly opaque dark formations creates a particularly dramatic appearance under transmitted light.
Montana Agate is a classic American lapidary material, best known from the alluvial gravels of the Yellowstone River system. It is prized for translucent chalcedony containing distinctive brown, black and reddish iron- and manganese-rich inclusions, frequently forming dendritic, plume-like and abstract patterns. This specimen retains its original collection identification and catalog number 504.
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