From Cartier, De Grisogono and Bulgari to Chopard, Atelier Swarovski and Montblanc, stars stepped out in prestigious creations from the biggest names in the business. Here's a look at some of the standout jewellery spotted on the Cannes red carpet at the 70th edition's opening ceremony:

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Alice Taglioni wore a Montblanc 4810 necklace and bracelet.

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Naomie Harris wore a selection of fine jewelry pieces from the Concentric collection byAtelier Swarovski.

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Sara Sampaio wears diamond earrings and a ruby and diamond ring by De Grisogono.

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Julianne Moore stepped out in Precious Chopard earrings.

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Eva Herzigova wore Chopard white gold and diamond earrings.

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Monica Bellucci wore Cartier high jewelry creations to the festival's opening ceremony.

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Bella Hadid wore a Bulgari necklace, which the internet found reminiscent of the Heart of the Ocean from Titanic (1997)

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Jessica Chastain shone in a Piaget high jewelry necklace.

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Lastly, Emily Ratajkowski wore this imposing Bulgari necklace.

Tags: Piaget, BUlgari, Atelier Swarovski, Cannes, 70th Cannes Film Festival, Celebrities, De Grisogono, Cartier, Montblanc, Chopard, Swarovski