Thirty years of knowing what sells.
S&J Diamond Corp has worked in New York's Diamond District since 1995. The team that built the company is largely the team that still runs it.
Three decades in the trade.
S&J began in loose diamonds — trading stones and servicing the trade long before we made a single piece of jewelry. That foundation still runs underneath everything: we source our own diamonds, natural and lab, along with our colorstone, rather than buying finished goods and marking them up.
From stones we moved into jewelry itself, building a manufacturing network across the world. We don't make every partner's product the same way — we route each program to the supply chain that fits it, so the quality meets the customer and the price holds on the floor. Diamond and colorstone, across bridal, fashion, and signature.
We don't sell to consumers. We exist to make our retail partners faster, more profitable, and more certain in every piece they put under glass. Three decades in, the product is still only where we start — the partnership is the rest.
We lead with the why.
Every partnership runs through the same three phases. First, discovery — a deep study of your business: your customer mix, your floor, your top SKUs, your gaps. Then the playbook — a custom sell-through strategy with the business context behind every recommendation. Then live operation — digital catalog, real-time inventory, drop-ship fulfillment on every in-stock SKU, and quarterly reviews on what's moving.
We don't push a piece because it's in inventory. We push it because we've studied your business and we know who buys it, why it sells now, and what margin it commands.
A modern stack on a thirty-year foundation.
A live catalog, online ordering, and a modern operating layer beneath all of it — an operation built to anticipate, not just respond. The infrastructure is new; the judgment behind it is not.
580 Fifth Avenue, Suite 1002.
New York, NY 10036 · (212) 575-0111 · sales@snjny.com
Trade-only, by appointment.