A miniature agate chrysanthemum-form cup. Photo Bonhams

Of inverted bell form supported on a circular foot ring, its smoothly finished interior walls rising to a petal-form rim conforming to the upper of two tiers of chrysanthemum petals carved in relief to the exterior walls. 2in (5cm) diameter. Sold for US$8,750

Bonhams. Asian Works of Art, 21 Dec 2011, California, San Francisco www.bonhams.com