東漢 Certified Chinese Nephrite Jade Panda Bear, 36 cm, Eastern Han Dynasty 25-220 AD

拍品描述

東漢 Chinese Nephrite Jade Bear, 36 cm, Eastern Han Dynasty (25-220 AD). Kneeling bear with human like body. The body of the bear is covered with raised archaic images of people, animals, trees, etc. Age: Eastern Han Dynasty (25-220 AD) with Zhou Dynasty motifs (1046-256 BC). Weight: 42.0 lb. = 19 kg; Height: 14.5 in. = 36.2 cm; Width: 12” = 30 cm; Base: 7 x 8 inches = 18 x 21.5 cm: Proves of old age (all microscopic pictures x50 are available on demand): · Additive crystal planes: Additive crystal planes are the crystal planes added to the jade artifacts due to exterior materials. Needle like flat crystals are fabricated into the jade itself as a new material. Present · Cleaving veins: The cleaving veins seen inside the jade artifact are caused by the interaction of jade of the physical factors of heat and pressure. They are different from the cracks caused by percussion. Usually there are no exterior cracks for cleaving veins and exterior cracks are common phenomena for cracks caused by percussion. Present · Diffusive markings: Diffusive markings are the phenomena caused by the incremental penetration of exterior chemicals (iron, ) after the impact of heat and pressure conditions of the underground environment. Different levels of condensed of colors are seen in the jade artifacts. Present · Differential weathering: By the definition of the Random House Unabridged Dictionary, (Copyright © 1997, by Random House, Inc., ), differential weathering is the difference in degree of discoloration, disintegration, etc., of rocks of different kinds exposed to the same environment. Here we define it as the different deterioration of the surface of the traces of carving on jade artifact due to humidity, heat and chemicals in the air after a long period of time. Wrinkles are seen in the traces of carving due to differential weathering. Present at small degree. · Dissolved Pits: These are the holes caused by natural causes. Mineral crystals are seen inside the hole. These mineral crystals are impossible to imitate through artificial methods. Present at small degree. · Exposed crystal plane (mica): Exposure crystals: Exposure crystals are crystals transformed from the jade itself due to physical factors such as heat and pressure. Proves of the usage of ancient tools: jade surface has uneven traces of cuts, polishing and hand drilling. A lot of microscopic pictures (x50) are available on demand. Certificate of authenticity will be issued by Eternity Gallery. References: Similar Jade Bear was sold in USA, on Sat, Dec 10, 2011 on Live Auctioneers by Elite Decorative Arts, for $7,050,000. https://www.liveauctioneers.com/item/10346988_100-rare-eastern-han-dynasty-solid-nephrite-jade-bear

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