An Aquamarine and Tourmaline Rosary-Bracelet, Qing Dynasty. Photo courtesy Michaan's Auctions 

Comprising eighteen large aquamarine beads of spherical form, equally spaced by two larger pink tourmaline beads, the counterweight double-gourd bead suspending a rounded rectangular tourmaline plaque, two tourmaline drop-shaped beads with gold filigree caps, and clusters of seed pearls and small pink beads. Length: 10 1/2 inches (26.7 cm). Estimate: $18,000/22,000. Unsold

Michaan's Auctions. Fine Asian Works of Art Auction. Sunday June 23, 2013, 10am. http://www.michaans.com