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全部拍賣 / Ethnographic / Stunning Blue Agate Geode with Red Chalcedony - Mineral...
A Natural Masterpiece: Agate and Calcedony from Brazil — This exceptional specimen is an agate geode carefully sliced, hailing from Brazil’s rich mines. Its cut and polished surface reveals a fascinating stratification of concentric bands, with dominant tones of dark blue and warm shades of orange and golden brown, a testament to the different minerals present during its slow geological formation. Each ring tells a phase of the mineral history, creating an organic design of extraordinary beauty. At the center of this chromatic composition, an inner cavity showcases a spectacular formation of red-calcedony. This crystalline area, with its luster and granular textures, creates a bright focal point that magnificently contrasts with the depth of the surrounding agate. The combination of these two mineralizations is not only aesthetically pleasing but also offers a fascinating glimpse into the complex chemical-physical interactions that occurred within the host rock. Geodes form in volcanic or sedimentary rocks, where gas bubbles or voids are gradually filled by mineral-rich solutions. Over millions of years, these fluids deposit successive layers of silica, creating the distinctive bands of agate, and sometimes, as in this case, allowing crystal growth inside the final cavity. This specimen, cut into two complementary halves, allows full appreciation of its internal architecture and natural symmetry. The contrast between the intense blue of the agate, the intermediate earthy tones, and the bright red accent of the calcedony makes this piece a visually striking addition to any collection. It is a magnificent example of how nature can create geological artworks of rare beauty and complexity, perfect for both the discerning collector and the connoisseur of fine furnishings, capable of enhancing a room with its dramatic presence. Irregularities, small fractures or visible color variations are intrinsic characteristics of the natural formation of the specimen and attest to its authenticity and geological origin. No restoration or treatment has been applied to this piece, which presents itself in natural and uncontaminated conditions. Technical Data: Name: Agate Geode with Calcedony; Provenance: Brazil; Material: Agate, Calcedony; Dimensions: 185 mm (height) × 170 mm (width) × 140 mm (depth); Weight: 2225 g; Conditions: Natural; Lot Code: ZAR-333 GAG-23
估價:$477.93
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估價:
$477.93
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