Poison Ring $42,000

Made circa 1890 by Marcus & Co., this 18 18-karat-gold k t ld E Egyptian ti Revival poison ring is surmounted by a lozenge-shaped emerald that is flanked by stylized sphinxes.

The stunning piece is available this month from New York–based Kentshire Galleries at the Winter Antiques Show. winterantiquesshow.com; kentshire.com