TABATIERE EN VERRE SANDWICH AVENTURINE ET OVERLAY BLEU CHINE, XVIIIE

The combination of overlay and  sandwiched glass with aventurine is very rare. Several examples of aventurine-glass bottles are illustrated in Moss, Graham, Tsang, A Treasury of Chinese Snuff Bottles, Vol. 5 Part 1, Glass, no. 717 to 720 ; other with the Qianlong Mark are illustrated in Snuff Bottles in the Collection of the National Palace Museum, Taipei, no.249 and 251. For further discussion on aventurine-glass, see also Moss, Graham, Tsang, The Art of the Chinese Snuff Bottle. The J & J Collection, no. 340.
Se also a glass snuff bottle in similar twisted colors and golden spots but without overlay, from the middle of the Qing dynasty, in the Qing Court Collection, and illustrated in The Complete Collection of Treasures of the Palace Museum, Snuff Bottles, pl.95.
For transparent sapphire blue overlay, see Moss, Graham, Tsang, A Treasury of Chinese Snuff Bottles, Vol. 5 Part 2, Glass, no. 920 and 926.