Bold silhouettes. Sculptural stones.

Discover the collection redefining statement jewelry.

Make a CHAIN STATEMENT

Modern forms. Rare stones. Each MHART piece is handmade in New York City — no two alike.

Michael transforms one-of-a-kind gemstones into wearable pieces of art that dare you to embrace your individuality.

Each piece is built around the natural shape of the gemstone—never forced, never symmetrical by design. The chain responds intuitively, wrapping organically to form a sculptural, architectural shell. Each link works in tension, creating a flexible yet supportive cage that balances force and form, delicacy and strength. The result is a one-of-a-kind design shaped by the stone.

Designer Michael Hartney of MHART, creating one of the brand’s signature Caged Gemstone Pendants by hand.

Shop in store

5 Kenmare St. New York, NY 10012

Tuesday - Friday, 12pm - 7pm
Saturday, 10am - 8pm
Sunday, 11am - 5pm

Get directions

At MHART, we believe that jewelry is more than adornment—it’s a statement of individuality. Nestled in the heart of NoLita at 5 Kenmare Street, our studio & retail space in New York City invites you to explore a world where bold silhouettes, rare stones, and sustainable craftsmanship converge.

Founded by designer Michael Hartney, MHART jewelry is handmade in our studio beneath the shop, featuring one-of-a-kind gemstones and thoughtfully designed metalwork.

Visit our NoLita store to explore the collection and share a drink with the designer as you collaborate on a custom creation made just for you.

QUARTZ

The stone of clarity + energy

A natural healer in raw form.

Hand-selected gemstones and pearls delicately linked together to form a one-of-a-kind chain.

Gemstone Chains

HANDMADE

Every gemstone that leaves my hands to become part of your life is intricately handmade with fine attention to detail. Each piece is one-of-a-kind and a true work of art.

SUSTAINABLE DESIGN

By consciously making choices to reduce pollution and waste, we can minimize the impact of jewelry production on the environment.

Every Purchase Gives Back:

We want to make our planet a better place. MHART plants a tree or removes one piece of plastic from the ocean for every website purchase.

Ethically Sourced Gemstones

The gemstones themselves are each unique, with their own colors, patterns, and shapes. No two are alike, making each piece of jewelry truly one-of-a-kind.