A GREEN JADE CEREMONIAL BLADE, NEOLITHIC PERIODChina, 3rd millennium BC. Of trapezoidal form with a straight upper edge and beveled lower edge, drilled with three apertures along the upper edge. The translucent stone of a pale green tone with grayish-white and brown shadings and cloudy inclusions.Provenance: From the estate of Ivar Björnberg. One side with an old label, ‘10’. Ivar Björnberg (1934-2021) was a noted art director from Stockholm, Sweden. He was friends with Victoria Lindström, a reputed dealer and collector of Chinese art, also based in Stockholm at the time. Björnberg worked at her gallery at a young age and when he eventually started his own collection, she mentored him. His collection was an academic one and it showed his keen eye, discerning taste and great passion for the aesthetics of Chinese art. Condition: Very good condition with ancient wear as well as tiny chips and nibbles which have smoothened over the centuries. Natural inclusions.Weight: 164.2 g Dimensions: Length 17.2 cmExpert’s note: Jessica Rawson in Chinese Jade from the Neolithic to the Qing, British Museum, 1995, p. 184, discusses jade ceremonial blades and how they evolved from stone reaping implements.新石器時代青玉匕中國，西元前三千年。呈梯形，上緣直，下緣斜，沿上緣鑽三個孔。 淺青綠色調的半透明玉料，帶有灰白色和棕色陰影和絮狀物。 來源：知名瑞典斯德哥爾摩藝術經銷商Ivar Björnberg (1934-2021)舊藏，一面有舊標籤“10”。他與著名的中國藝術品經銷商和收藏家Victoria Lindström是好友，後者當時也居住在斯德哥爾摩。Björnberg 年輕時在她的畫廊工作，當他最終開始自己的收藏時，她給了他很多建議。他的收藏是學術性的，顯示了他敏銳的眼光、挑剔的品味和對中國藝術美學的極大熱情。 品相：狀況極好，有磨損以及經過幾個世紀磨平的細小磕損。 天然內沁。 重量：164.2 克 尺寸：長17.2 厘米