A WHITE JADE DOUBLE-SIDED CIRCULAR TABLE SCREEN18th centuryCrisply carved on one side with a mountain landscape, featuring two attendants washing an elephant in a river, all amidst rocks and pine trees, the reverse with a bat flying towards a peony tree on a rocky landing, the white stone with small areas of russet inclusions, stand and box.13.5cm (5 1/4) diam. (2).Provenance: 十八世紀 青白玉洗象圖圓硯屏Circular screens such as the present lot are amongst the most prestigious form of jade carvings, requiring an exceptionally large and nearly flawless raw jade boulder for its production. The thick jade disc, over 1cm at the edge, allowed the carving on both sides to be unusually deep, with the varying depths allowing the natural translucency of the stone to shine through.Compare a pale green jade circular screen, Qianlong mark and of the period, from the Palace Museum, Beijing, illustrated inNoble Virtuosity: Imperial Jades of the Qing Dynasty from the Palace Museum, Macau, 2012, pl.40; see also a white jade circular screen, Qianlong, illustrated inChristie's 20 Years in Hong Kong, 2006, p.370, sold at Christie's Hong Kong on 1 December 2010, lot 3006.白玉泛青，質潤色勻，部份帶有皮色。屏為圓形，正面雕洗象圖，屏反面雕福壽圖，寓意長壽吉祥。雕刻此類圓形硯屏對玉雕工匠的技藝及選材均有極高的要求，工匠需要選用大塊玉質上乘的玉料進行雕琢，此類玉料極其珍貴。此件圓形硯屏玉質柔潤，用料講究，厚度超過1厘米，使得玉匠雕刻得以深淺自如，將工藝發揮得淋漓盡致。參考北京故宮博物院藏一件類似的乾隆圓形硯屏，見《君子比德：故宮珍藏清代玉器精品集》，澳門，2012年，圖版40。另見一例清乾隆白玉雕圓形硯屏，著錄於《香港佳士得20年》，2006年，頁370，後於香港佳士得售出，2010年12月1日，編號3006。