He retired last month after 28 years traveling the world to source the very best gemstones for his family’s jewelry business, Oscar Heyman.
Piece of the Week: John Hardy’s Tagua Nut Locket
Designer Hollie Bonneville Barden’s debut high jewelry piece presents a sustainable alternative to ivory.

It took 13 John Hardy artisans five months to develop the first piece creative director Hollie Bonneville Barden has designed for the house’s “Cinta” high jewelry collection.
Bonneville Barden envisioned the material as a sustainable alternative to animal ivory, an end goal shared by some other designers.
The tagua nut locket is carved to depict Naga, the mythical dragon featured in many John Hardy designs, and embedded with a citrine and blue sapphire. Inside the locket rests a Madeira citrine hung from a mother of pearl, yellow gold and andalusite bead necklace. The entire design is adorned with brown diamond and orange sapphire pave.
The tagua nut locket can be removed from the necklace and displayed as an objet d’art or worn around the hidden citrine.
Bonneville Barden’s first high jewelry piece will be available for purchase Sep. 6 by contacting John Hardy. It will retail for $29,500, with 20 percent of the proceeds going to elephant conservation efforts led by the Wildlife Conservation Society.

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