Triassic Petrified Wood Sphere from Madagascar...

A shiny spherical fragment from prehistoric times — This unique specimen features a finely worked sphere carved from a block of fossil wood from Madagascar, an authentic testimony of the Triassic period, dating back over 200 million years. Through the process of petrification, organic matter was gradually replaced by minerals, mainly quartz and chalcedony, preserving with extraordinary fidelity the intricate grain and the original texture of the wood. This geological phenomenon transforms plant material into a hard, durable rock, while retaining traces of its ancient biological form. The sphere displays a rich color palette dominated by an intense reddish-brown, alternating with bands and inclusions ranging from cream to black. There are semi-translucent sections where one can appreciate the different shades and the microcrystalline structures formed during mineralization. The lighter areas reveal silica and oxide infiltration, creating a fascinating visual contrast that highlights the anatomical details of the wood, such as growth rings and medullary rays, now converted into minerals. Upon careful observation of the glossy surface, one perceives the incredible transformation from organic to inorganic. Some portions of the sphere retain a morphology that almost recalls living wood, but with the hardness and luster of stone. This dichotomy between organic origin and mineral composition makes every fossilized-wood sphere a object of great interest not only for mineral and fossil collectors, but also for natural history and design enthusiasts. This specimen is not only a decorative artifact, but a true voyage through time, a tangible fragment of the Earth's ancient biosphere. Its presence in a collection or as a design element can evoke wonder and reflection on the planet's deep geological history. It represents a convergence point between the art of nature and human craftsmanship, capable of highlighting its intrinsic qualities. Name: Petrified Wood (Petrified Wood) Classification: Plant fossil Geological period: Triassic Age: About 200-250 million years Origin: Madagascar Material: Silica (Quartz, Chalcedony) and oxides Workmanship: Glossy sphere Dimensions: 97 mm (diameter) Weight: 1270 g Conditions: Natural, excellent surface condition with typical grain and small natural fractures of the formation. Lot code: ZAR-205 SLM-17

Estimation:€170

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