Pre-Columbian animal figures went in, along with prehistoric "mirrors" of hammered gold, ancient Chinese faces carved from jade and antique jewelry with rubies and emeralds.

NPR: 'I Love Mysteries,' Says Man Claiming Hidden Gold

Stones popular among Chinese, such as jade, have rocketed in price in the past several years, and there's no shortage of buyers who can and will pay top dollar.

FORBES

In her spare time, Lo quietly collected Chinese jewelry, especially "finger pieces, " including jade ornaments, precious stones and items linked to China's ancient times.

FORBES: Special Report