New Evidence for the Use of White Nephrite during the Liangzhu Culture
Year: 2025
Type: article
Abstract: This article presents a large-format jade bi disc with a radial cicada motif, attributed to the Liangzhu culture (ca. 3300–2250 BCE). Through mineralogical, technological, and cultural analysis, the authenticity of the artifact is demonstrated, and a geological provenance is proposed. Contrary to the persistent misconception that white jades of Liangzhu are merely weathered or “bleached” green nephrites, we show that this disc was carved from primary white tremolite with a bundle-fibrous structure, consistent with the Xiaomeiling (Liyang, Jiangsu Province) deposit, located only 100–170 km from the Liangzhu heartland. The ochre patina follows the fibrous bundles of tremolite, evidencing anisotropic infiltration of Fe³⁺ oxides during burial. The artifact embodies a unique synthesis: the bi form representing the celestial vault and the cicada motif symbolizing rebirth. Together they constitute a cosmological model of immortality. Fluvial transport routes via the Yangtze tributaries and Taihu Lake likely facilitated the supply of large white tremolite blocks to Liangzhu elites. This discovery necessitates a revision of our understanding of jade sources, symbolism, and elite ritual practices in prehistoric China. Introduction The Liangzhu culture (ca. 3300–2250 BCE), centered in the Yangtze River delta, represents the zenith of Neolithic jade civilization in East Asia. Monumental earthworks, stratified cemeteries, and large-scale jade workshops demonstrate a complex social hierarchy and a sophisticated ritual system. Jade (yu, 玉), especially in the forms of bi discs and cong tubes, embodied cosmological concepts of heaven and earth and mediated between humans and deities. For decades, scholars have debated the raw material supply of Liangzhu jades. Were they carved from locally available tremolite deposits, or from imported sources? A persistent narrative has suggested that green nephrite artifacts became white post-burial through weathering, producing the so-called “chicken-bone white” alteration. While superficial bleaching does occur, this explanation fails to account for primary white tremolite nephrite, geologically distinct and recognizable by its bundle-fibrous texture. Here we present a large jade bi disc with a radial cicada motif, previously unrecorded in typology, and argue on mineralogical and geological grounds that it was carved from primary white tremolite, most likely from the Xiaomeiling deposit in Jiangsu, only ~100–170 km from the Liangzhu heartland. This provides direct geological proof of local white jade supply, contradicting the idea that whiteness was merely a burial effect. Description of the Artifact The disc is carved with a central ring decorated with stippled bosses (乳钉纹). Radiating outward are twelve large segments, each pierced with rectangular and circular perforations and lunate cutouts (月口). The external ring is formed by stylized cicadas (蟬), recognizable by their prominent eyes, elongated wings, and pointed abdomens. This radial arrangement transforms the entire disc into a symbolic crown of cicadas encircling the celestial aperture. The object is carved from light, nearly white tremolite nephrite. Macroscopic examination reveals large fibrous bundles, giving the stone a distinctive anisotropic texture. A rich ochre patina infiltrates recesses and microcracks, producing mottled zones aligned with the fibrous structure. Mineralogy and Microstructure Analytical petrography of nephrite distinguishes between two mineralogical end-members: nephrite (tremolite-actinolite) and jadeite. All Liangzhu jades analyzed by non-destructive methods (PIXE, XRD, Raman) belong to the tremolite-actinolite group (Gan et al. 2010; Palace Museum 2022). Jadeite only entered China during the eighteenth century via imports from Upper Burma (Hughes 2000; Barnes 2018), making it anachronistic for Neolithic artifacts. The present disc clearly exhibits the bundle-fibrous texture of tremolite, with coarse aggregates up to several millimeters thick. This texture is typical of tremolite nephrite formed in carbonate contact-metasomatic environments. It is also consistent with the geology of the Xiaomeiling (Liyang, Jiangsu) deposit, which produces large blocks of white tremolite with reduced fracture density (He et al. 2002). Patina and Burial Alteration (沁色) The disc is covered with a mottled ochre-brown patina. Importantly, the coloration penetrates into the walls of perforations and along abrasively cut grooves. SEM-EDS studies of similar artifacts show that such colors correspond to iron oxides (goethite, hematite) precipitated during prolonged burial in acidic, iron-rich soils (Bao et al. 2020). Crucially, the distribution of patina is anisotropic, following the fibrous bundles of tremolite. This is evidence of capillary infiltration along the anisotropic microstructure of nephrite. Such patterns cannot be artificially produced by surface staining, which would remain superficial and uniform. The observed penetration depth and microcrystalline deposits of Fe-oxides confirm authentic long-term burial alteration. Drilling Technology The perforations exhibit biconical profiles, with irregular walls and concentric striations typical of ancient tubular drilling with quartz abrasives. This technology is characteristic of Neolithic Liangzhu jade working, as confirmed by experimental replication and SEM studies (Gwinnett 1987; Fang & Yu 2019). Later Qing-period archaizing imitations, in contrast, display regular cylindrical holes produced by steel drills. The Cicada Motif in Liangzhu The cicada (蟬) is a central ritual symbol in Chinese prehistory, embodying rebirth and immortality. Archaeological discoveries confirm its presence in Liangzhu. The most important case is Tomb M106 at Beicun, where the first depiction of a cicada with spread wings and perforations for sewing was excavated (Liangzhu Museum 2021; Zhejiang Administration 2021). Cicadas also appear in Shijiahe culture, often more naturalistic, but Liangzhu examples are schematic, emphasizing symbolic abstraction (National Museum of China). The present disc’s radial cicada composition is unprecedented: combining the cosmic circle of bi with the rebirth symbolism of cicadas, it forms a cosmological model of immortality. Geological Provenance: The Xiaomeiling Deposit The geological breakthrough comes from correlating the artifact’s texture and patina with known deposits. Xiaomeiling (Liyang, Jiangsu) is a tremolite nephrite deposit formed in a granite–marble contact zone. It produces white to grey-white nephrite with coarse bundle-fibrous texture and large block size (He et al. 2002). Distances from Xiaomeiling to major Liangzhu sites (Yuhang, Mojiaoshan) are only 98–167 km, within realistic procurement range (Li et al. 2021). Modern geological syntheses place Xiaomeiling within the eastern Chinese nephrite metallogenic belt, along with Xiuyan (Liaoning) and Hualien (Taiwan), confirming its significance (Zhang et al. 2023). Thus, the disc was most likely carved from local white tremolite from Xiaomeiling, transported via fluvial routes: blocks could be floated down the local tributaries into the Yangtze system and Taihu basin, reaching the Liangzhu workshops. Discussion Refutation of the “bleached green” hypothesis. White Liangzhu jades are not merely altered green nephrites. The present disc is carved from primary white tremolite, with patina accentuating the fibrous structure. Textural evidence. The large fibrous bundles correspond uniquely to Xiaomeiling geology, excluding other sources. Patina anisotropy. The ochre pattern following fiber bundles confirms burial alteration, not artificial staining. Symbolism. The synthesis of bi (cosmos) and cicadas (rebirth) defines a new ritual form in Liangzhu’s jade canon. Logistics. Fluvial transport along the Yangtze and Taihu basin waterways explains how large white nephrite blocks were delivered to Liangzhu elites. This complements archaeological evidence of Liangzhu’s control of water networks and hydraulic systems. Conclusion The large jade bi disc with radial cicada motif represents an authentic Liangzhu artifact of exceptional rarity. Its mineralogy (white tremolite), microstructure (bundle-fibrous), patina (anisotropic Fe-oxide infiltration), and drilling (biconical tubular) collectively confirm its Neolithic origin. Geological correlation identifies Xiaomeiling (Liyang, Jiangsu) as the most plausible source of the raw material, situated within 100–170 km of the Liangzhu center and accessible via fluvial transport. This discovery overturns the long-held belief that white Liangzhu jades are merely weathered green nephrites, demonstrating instead that primary white tremolite was deliberately sourced and used. Symbolically, the disc combines the celestial order of the bi with the regenerative force of cicadas, producing a cosmological model of immortality. It is thus a revolutionary contribution to our understanding of jade provenance, ritual symbolism, and elite culture in prehistoric China. References Gan, F.X. et al. (2010). Provenance study of Liangzhu jade artifacts from Yuhang, Zhejiang using PIXE, XRD and Raman spectroscopy. Science China Technological Sciences. He, M.Y., Zhu, Y.N., Li, H.B. (2002). Gemmological characteristics of Meiling jade from Liyang, Jiangsu Province. Acta Petrologica et Mineralogica 21(Z1): 99–104. Liangzhu Museum (2021). Lecture Series on Early Liangzhu: Discovery of cicada from Tomb M106 at Beicun. Li, P. et al. (2021). Infrared and Raman spectral evidence for the Xiaomeiling nephrite deposit (Jiangsu, China). Spectrochimica Acta A 263: 120200. Zhejiang Provincial Administration of Cultural Heritage (2021). Report on new Liangzhu discoveries at Beicun: Tomb M106. Bao, Y. et al. (2020). Nondestructive analysis of alterations of Chinese jade artifacts from Jinsha. H
Author: NONA, Dronova
Language: English
Subfield: Archeology
Field: Arts and Humanities
Domain: Social Sciences
Open Access status: green
OpenAlex ID: W7078977208
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