Margot Robbie Rocks a Statement Necklace at the Oscars

The Australian beauty's necklace gave off major Heart of the Ocean vibes.

Margot Robbie's necklace was the focal point of her 2015 Oscar ensemble.

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"This necklace is worth more than my life," Robbie told Ryan Seacrest of the antique Van Cleef & Arpels piece, which features diamonds and sapphires set in 18K yellow gold. "It was created or the Duchess of Windsor or something in the '30s. I am very lucky to be wearing this."

Lucky is an understatement.