A rare crystal and diamond Fabergé egg crafted for Russia’s ruling family before it was toppled by revolution shattered records Tuesday as it sold at auction for 22.9 million pounds ($30.2 million).

The Winter Egg, which was compared to the iconic Mona Lisa, was just one of seven of the opulent ovoids remaining in private hands, Christie’s London auction house said.

The 4-inch (10-centimetre) tall egg is made from finely carved rock crystal, covered in a delicate snowflake motif wrought in platinum and 4,500 tiny diamonds. It opens to reveal a removable tiny basket of bejewelled quartz flowers symbolizing spring.

The sale price, which included a buyer’s premium, topped the $18.5 million paid at a 2007 Christie’s auction for another Fabergé egg created for the Rothschild banking family.

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