B2B Wholesale · NYC + LA

Wholesale Lab-Grown Diamonds for Trade Buyers.

IGI & GIA certified. One vendor for calibrated melee, antique cuts, fancy colors, matching pairs, and custom rings — shipped the same day from New York City.

2,000+

Active trade accounts

4–6 d

Custom ring turnaround

1 box

One vendor · One shipment

Request Wholesale Pricing

Or call (212) 652-7108 Mon–Sat · 9am–6pm EST

Calibrated lab-grown melee parcel on dark studio background

IGI Certified

GIA Certified

JBT Member

5th Consecutive JCK

NYC + LA Offices

Same-Day Shipping

Request Pricing

Four fields. One business day.
Trade pricing in your inbox.

Tell us your volume and what you source. We reply with wholesale pricing, current inventory notes, and a named contact within one business day. No account? No problem — applications are reviewed the same day.

1 biz day

Reply on every form

14 day

Free return on first order

Request Pricing

Complete the form below — we respond within one business day.

Your name *

Business name *

Business email *

Phone (optional)

Monthly diamond volume *

Primary interest (optional)

I confirm this is a B2B inquiry from a jewelry trade business. We will respond within one business day.

Urgent? Message us on WhatsApp No spam. Ever.

The pitch

One vendor. One shipment. One relationship.

Breadth

Six specialty categories under one roof. Melee, antique cuts, fancy colors, pairs, jewelry, and cutting — all in one order, all in one box.

Speed

Same-day shipping from NYC. Four to six business days on custom engagement rings. LA ships before 4pm PST.

Trust

IGI and GIA certified. Memo terms for qualified trade buyers. Fourteen-day free return shipping on your first order.

A Spectrum of Perfection

Catalog

The catalog, in six categories.

Every category is in stock and shippable today. Click any tile to browse inventory or reach our team.

01 · Front door

Calibrated Melee

Round brilliant, fancy shape, and fancy color melee — calibrated to your setting spec. CVD-grown only. Same-day shipping on orders before 6pm EST.

View Melee

Antique Cuts

Old Miner · Old Euro · Hexagon · Rosecut · Trilliant · Triangle.

View Cuts

Fancy Colors

Yellow · Pink · Blue · Green. Loose & melee, round & fancy shapes.

View Colors

Matching Pairs

Eight calibrated pair shapes, matched to the tenth of a carat.

View Pairs

05 · 4–6 Day Turnaround

Custom Jewelry

White-label or drop-ship engagement rings. CAD-ready or design-from-scratch.

View Custom

Custom Cutting

Stone recutting and specialty cuts. Contact us for timeline and insured shipping.

Why switch

The three things the trade keeps coming back for.

01 · Breadth

Six categories. One order.

Melee, antique cuts, fancy colors, pairs, custom jewelry, and custom cutting — all in one shipment, on one invoice, from one relationship manager.

02 · Speed

Same day from NYC. 4–6 days on rings.

Orders placed before 6pm EST ship same day. Custom engagement rings ship in four to six business days from CAD approval.

03 · Trust

IGI + GIA. Memo terms. 14-day free return.

Memo terms for qualified trade buyers. Fourteen-day free return shipping on first orders. Serving 2,000+ active trade accounts across the US.

The trade says

Trusted by 2,000+ trade accounts.

“Their service is on a different level. One call and everything arrives same day — melee, center stone, side stones, all calibrated.”

Daniel Rosen · Rosen Fine Jewelers · Costa Mesa, CA

“I used to call five suppliers and pay five shipping bills. Now I call Guru Diam once and it all comes in one box.”

Sarah Kaminsky · Kaminsky & Co. · Houston, TX

“The only vendor I trust for calibrated fancy color melee. What I order is what arrives, every time.”

Michael Avila · Avila Bench Services · NYC

In stock today.

Updated 15 June 2026

1.21 OMB

2.04 OEC

0.85 HEX

1.53 ROSE

1.10 TRI

3.02 F.YEL

0.72 F.PINK

2.41 CUSH

2.0mm PARCEL

1.5mm F.COL

PAIR 1.8CT

8.05 AS

View Full Inventory

FAQ

Before you request pricing.

Do you ship same day?

Yes. Orders placed before 6pm EST ship same day from our NYC office. LA ships before 4pm PST. Tracking is sent automatically once the package leaves the building.

Do you offer memo terms?

Yes, for qualified trade buyers. Memo applications are reviewed in one to two business days. Short-term and long-term memo are both available depending on the relationship stage.

Are all stones certified?

Every stone is IGI or GIA certified — your choice of lab. Parcel goods come with parcel-level certification. Individual certs are sent digitally at the time of order confirmation.

Do you do custom cutting?

Yes — we recut existing stones and cut specialty shapes on request. Minimum 0.50ct finished weight. Standard turnaround is seven to fourteen business days.

What's your custom engagement ring turnaround?

Four to six business days from CAD approval. White-label and drop-ship are both available — we ship in your packaging, to your customer, with your branding.

Do you sell to independent jewelers?

Yes — roughly 80% of our clients are independent jewelers and boutique designers. There's no minimum account size. Apply for a trade account through the form above; approval is usually same-day.

Still comparing? Start with one email.

Request Pricing

Or call (212) 652-7108

Last updated on: Jun 15, 2026

Wholesale Lab-Grown Diamonds for Trade Buyers.

Four fields. One business day. Trade pricing in your inbox.

Request Pricing

One vendor. One shipment. One relationship.

The catalog, in six categories.

The three things the trade keeps coming back for.

Six categories. One order.

Same day from NYC. 4–6 days on rings.

IGI + GIA. Memo terms. 14-day free return.

Trusted by 2,000+ trade accounts.

In stock today.

Before you request pricing.

Do you ship same day?

Do you offer memo terms?

Are all stones certified?

Do you do custom cutting?

What's your custom engagement ring turnaround?

Do you sell to independent jewelers?

Still comparing? Start with one email.

Four fields. One business day.
Trade pricing in your inbox.