Davis, seen below with human penis, Scott Storch, and human penis cozy, Paris Hilton.

Unctuous oil heir Brandon Davis famously called Lindsay Lohan "poor" for allegedly being worth $7 million.

But are the Davis coffers so healthy themselves?

Word is that matriarch Barbara Davis is quietly liquidating her jewelry through a top Italian broker.

"A lot of it is Graff, which is known to have the best stones," says a source. "Most of Barbara's big gems are loose. A lot of the other stuff is being broken up for stones."

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