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

The smaller eggs offer a choice of materials, techniques and styles such as carved stones and minerals, as varied as rock crystal, chrysoprase, snowflake obsidian, lavender jade, jadeite, pink opal, rutilated quartz, jasper and turquoise.

FORBES: The Miniature Faberg�� Eggs