Polly Wales and Castro Smith unveil 16-piece collectible jewelry capsule

A skull, a serpent, a spiderweb and a sapphire that seems to have landed exactly where it was meant to be: Polly Wales and Castro Smith’s 16-piece capsule made a case for jewelry as private mythology, not just adornment. The collection went live on June 5, after an online preview on June 4 and a two-day Castro Smith pop-up at PWFJHQ in Los Angeles, where the point was clear: the future of personalized jewelry looks less polished in a mass-market sense and more alive with handwork, symbolism and slight irregularity.

The strongest idea running through the collaboration is not simply customization, but authorship. Wales developed her cast-not-set technique while working toward her Masters at the Royal College of Art, placing gemstones into molten gold during casting so each piece emerges as a unique treasure rather than a pre-planned setting. That method gives the metal a sense of contingency and surprise, the opposite of factory symmetry, and it is exactly the kind of detail discerning buyers can borrow for a custom commission if they want a piece that feels found rather than manufactured.

Castro Smith brings a different but equally specific language to the partnership. The London-based hand engraver and goldsmith trained through the Goldsmiths’ Company and RH Wilkins, later studied in Japan under master artisans, and built a reputation for reverse-engraved work that pulls from history, myth, nature, fantasy, sci-fi and biology. In this capsule, that vocabulary appears in motifs of skulls, serpents, butterflies, ants, vipers, flowers, wings, ravens and webs, rendered on signet rings and a jumbo padlock in 18k recycled yellow gold.

Several pieces were editioned at 50, but the collection still read as a study in singularity. The Three Relics Rainbow Jumbo Signet Ring was cast-not-set in 18k recycled yellow gold, engraved by Castro Smith and set with about 1.69 carats of stones. The Webs & Wings Jumbo Padlock, priced at £22,825, underscored the level of labor involved, while rainbow sapphires, green sapphires, red and pink sapphires, white diamonds and cognac diamonds added flashes of color against black rhodium, white rhodium, lilac ceramic and red ceramic finishes.

For collectors, the capsule suggests where high-end personalized jewelry is heading: toward pieces that carry iconography, texture and process in equal measure. A hand-engraved signet, a cast stone sunk into molten gold, a motif borrowed from folklore or anatomy, even a deliberately imperfect finish, can turn a jewel into a one-off object with emotional weight. That is the real appeal here, and it is why the most compelling bespoke work now feels less like decoration than evidence of the maker’s hand.