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全部拍賣 / Ethnographic / Large polished septarian geode egg – 'Dragon Stone' Dark...
Magnificent carved and polished specimen with hollow formations — This exceptional Madagascar Septarian egg is a true masterpiece of nature, carefully carved and polished to reveal its extraordinary beauty. The outer surface features a complex network of fractures filled with dark brown calcite that contrast magnificently with the surrounding matrix in beige and cream tones, creating the distinctive 'Dragon Stone' pattern highly appreciated by collectors. Opening the egg unveils an intriguing inner cavity, a miniature geode in its own right. This 'cavern' is lined with a multitude of sparkling dark aragonite crystals, which provide a dramatic contrast and surprising visual depth compared to the smooth outer surface. The internal luster and crystallographic tessellation add an element of mystery and wonder to this unique piece. Septaries, also known as 'Dragon Stones', are nodular concretions formed in marine sediments. Their formation process is fascinating: initially, organic-rich mud solidifies around a central nucleus (often a fossil or organic fragment). Over time, the water recedes, causing cracks and fissures in the mud nodule, which are then filled by minerals precipitated such as calcite, aragonite, or chalcedony. This peculiar geology gives Septaries their characteristic aesthetic. Native to Madagascar, an island renowned for its mineral wealth and diversity, this specimen embodies the essence of geological formation and natural art. Its notable size and craftsmanship make it a piece of great interest both to mineral collectors and to those who appreciate unique decorative items with a deep geological history. An extraordinary addition to any collection or setting.
估價:$534.48
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估價:
$534.48
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