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Barnebys HQ
Brahegatan 10
BOX 5038
114 37 Stockholm
All auctions / Ethnographical / Exlusive Agate Geode with Drusy Quartz " Jewelry Box"...
Imposing Natural Case Over 14 kg — An imposing Agate geode from Brazil, a sample of remarkable size and weight transformed into an object of rare beauty and functionality. The original volcanic rock was skillfully sectioned and polished to create an elegant case, whose upper part serves as a lid. The work reveals the duality of the mineral: a sober, smooth outer crust that opens to reveal a hidden crystalline universe, a true geological treasure chest. The geode's exterior has been mirror-polished, highlighting a dark, deep surface, almost black, streaked with veins and inclusions that testify to its complex geological history. The form is massy and organic, preserving the original contour of the volcanic nodules. When closed, the object presents itself as an abstract natural sculpture, mysterious and self-sufficient. Lifting the lid, a chromatic and structural spectacle is revealed. The clean cut exposes the concentric bands typical of Agate, a faithful record of the slow mineral deposition process. Layers of chalcedony alternate in a dance of colors: from milky white to translucent gray, from the warm caramel hue to fine orange and brown lines. The lines follow a festooned and botryoidal pattern, creating a hypnotic design that guides the eye toward the heart of the geode. The cavity’s center is a triumph of light. A sparkling carpet of Drusy Quartz, made up of countless white microcrystals, entirely covers the internal surface. Under light, these tiny crystals reflect and refract the rays, creating a visually striking “sugar rocks” effect. In some spots, as visible in the photos, the crystalline surface is speckled with darker inclusions, adding further complexity and mineralogical interest to the specimen. The genesis of this geode dates back millions of years, inside volcanic rocks. A gas bubble trapped in the cooling lava created the initial cavity. Subsequently, for a geologically very long time, silica-rich hydrothermal waters filtered through the porous rock. Slowly, layer after layer, the silica deposited on the interior walls of the cavity, crystallizing as microcrystalline chalcedony and giving life to the Agate’s bands. The central cavity not completely filled finally allowed the growth of Quartz crystals, the last phase of this extraordinary natural process. With a weight of over 14 kilograms and substantial dimensions, this specimen is not just a mineral, but a precious display piece. Its conversion into a case makes it a unique item, capable of combining the scientific interest of a Wunderkammer with a practical and elegant function. It is ideal as a jewelry box, guardian of small precious objects, or simply as a decorative focal point in a study, a library, or a design environment. Its imposing presence and hidden beauty make it a symbol of nature’s power and artistry, a conversation piece that will fascinate anyone who gazes upon it. Technical details Name: Agate with Quartz Classification: Mineral, Chalcedony (Quartz) Variety Origin: Brazil Dimensions: 321 x 274 x 158 mm Weight: 14400 g Conditions: Natural, cut and polished. Internal natural fractures and small surface irregularities are intrinsic characteristics of the specimen. Treatments: None known. The cut and polishing are mechanical processes.
Estimate:£1,695.5
To the auctionView all items fromCatawikiorEthnographical
Estimate:
£1,695.5
OCT 8 | 3:00 PM
OCT 8 | 3:00 PM
OCT 17 | 10:00 PM
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