The Baselworld Watch and Jewellery Fair opens April 25, and brands like Mattioli are ready with plenty of bling. Expect snake motifs and rose gold, as well as geometric shapes, exotic materials like jet, and colored stones. Here’s a peek at one new style buyers can expect to see at the show.

Pendant necklace in 18k gold with 4.55 cts. t.w. diamonds and ebony drop; $14,995; Mattioli USA

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