Tiffany & Co.’s latest drop feels like a deep dive in the ocean

What does the sea look like when filtered through 1,600 hours of craftsmanship, a Schlumberger archive, and a dream? Tiffany & Co. has a few ideas. The House’s latest high jewellery drop, Blue Book 2025: Sea of Wonder, surfaces with a new summer chapter that reframes the ocean in a combination of sapphire, moonstone, and aquamarine.

First introduced in 1845, the Blue Book is Tiffany’s annual high jewellery manifesto. It’s where the House builds wildly expressive, technically obsessive one-off pieces. Its about archival deep-dives, maximalist design, and near perfect craftsmanship. Every year, it drops in evolving chapters. This summer’s is all about marine abstraction, directed by Nathalie Verdeille, Chief Artistic Officer of Jewellery and High Jewellery.

As part of the line-up, the seahorse gets reimagined through Jean Schlumberger’s 1968 brooches, now dialled up with unenhanced purple sapphires, moonstones and blue sapphires. A standout necklace, which was crafted over 1,600 painstaking hours, can be worn three ways.

Then there’s the sea turtle. Based on archival designs from 1961, the new iteration plays with sculptural shells and ocean-tone stones—namely aquamarine, turquoise and diamond.

In this summer chapter of Blue Book 2025, Tiffany & Co. continues to position high jewellery as a space for formal experimentation. By pulling selectively from its archives without blatantly replicating it, the House manages to create work that’s bound to stand out.