Est. 1975 · NYC Diamond District

Where New York
Finds Its
Diamonds.

Family-owned since 1975. Hand-selected stones, GIA & IGI certified. The Diamond District's most trusted name.

Shop Collection

51 Years Legacy

10K+ Clients Served

100% USA Crafted

GIA Certified

FIND YOUR STONE

Shop by
Diamond Shape

Every shape carries its own character. From the timeless brilliance of a round to the architectural precision of an emerald cut.

Oval

Round

Emerald

Cushion

Pear

Bridal Collection · 2026

Begin with
a Yes.

From the first conversation to the moment she says yes — we're here for every step. Engagement rings, wedding bands, and matching sets crafted in-house, exclusively for you.

Explore Bridal Book Consultation →

VIP CLIENTS

The World’s Finest

Discerning collectors and tastemakers who trust Leon Diamond for life’s most important moments.

10,000+

Clients For Life

4.9 ★

Average Rating

2,400+

Verified Reviews

98%

Would Recommend

SPECIALTY

Fancy Colored
Diamonds

Beyond white — rare yellows, pinks, blues, and greens. Among the rarest objects on Earth. Leon Diamond specializes in sourcing and crafting these extraordinary stones.

Explore Fancy Colors