Global Diamond Group & Sons LLC

What Global Diamond Group & Sons LLC does

Global Diamond Group & Sons LLC is a wholesale fancy color diamond dealer headquartered at 589 5th Avenue in Manhattan, founded in 2000 by Fady Njeim after a prior venture (Fady Njeim Ltd., 1989) and more than a decade of apprenticeship on the New York diamond district. The firm sources, evaluates, and recuts natural fancy color diamonds — primarily yellows, pinks, blues, and reds — and supplies them to high-end luxury boutiques worldwide, while also offering custom jewelry design services and a secondary line of colored gemstones (sapphires, rubies). Its catalog includes several signature named stones, including The Juliet Pink (30ct Fancy Intense Pink, VVS), The Giant's Tear (31ct Fancy Blue pear shape, the largest fancy blue diamond to appear at auction), The Sienna Star (73ct Fancy Vivid Yellow Asscher Cut), and The Golden Eye (40ct Internally Flawless Fancy Vivid Yellow), each documented with a transformation narrative from rough to finished stone.

The business operates on a sales-led, appointment-based model with no e-commerce storefront; pricing is quote-based and undisclosed, varying by carat weight, color intensity, clarity, and cut. Customer concentration sits in the luxury jewelry retail segment, with named enterprise accounts including Harry Winston, Van Cleef & Arpels, Cartier, Tiffany & Co, Jacob & Co, and Asprey, alongside private collectors and independent jewelry designers served via private consultations. The firm is family-run across three generations, with founder Fady Njeim as CEO and his children Andrew Njeim (Operations Director) and Marc Njeim (Sales Director) handling day-to-day operations; it has no external investors, no subsidiaries, no patents, and no publicly disclosed financials. Marketing is a lightweight digital presence (Instagram, website gallery, newsletter) layered atop the firm's reputation and direct relationships in the global luxury trade.

Name

Global Diamond Group & Sons LLC

Legal name

Global Diamond Group & Sons

Website

https://globaldiamondgroupusa.com

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

1–10 employees

Short description

Global Diamond Group & Sons LLC is a New York-based wholesale dealer of natural fancy color diamonds, supplying luxury boutiques (Harry Winston, Van Cleef & Arpels, Cartier, Tiffany & Co, Jacob & Co, Asprey), private collectors, and designers worldwide with rare yellow, pink, blue, and red diamonds, custom jewelry, and colored gemstones.

Ownership category

akta.pro rank

Headquarters

HQ city

New York City

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Others

Revenue model

1. Wholesale Fancy Color Diamonds: Wholesale distribution of natural fancy color diamonds including yellow, pink, blue, and red diamonds to retailers and luxury boutiques worldwide
2. Custom Jewelry Design: Bespoke jewelry creation services collaborating with clients from concept to final piece, including custom engagement rings, tennis bracelets, and necklace designs
3. Hand-Crafted Jewelry Sales: Sale of finished jewelry pieces including rings, necklaces, wedding bands, and specialty pieces featuring fancy color diamonds and gemstones
4. Gemstone Sales: Sale of colored gemstones including sapphires, rubies, and other precious stones alongside diamonds

Go-to-market motion1 record

Distribution channels3 records

Marketing channels3 records

Core offering

Global Diamond Group is a wholesale diamond company specializing in natural fancy color diamonds (yellow, pink, blue, red), hand-crafted jewelry, and colored gemstones. The company sources, evaluates, and re-cuts rough or suboptimal stones into higher-grade gems, and supplies high-end luxury boutiques worldwide. It also provides bespoke custom jewelry design and expert gemological consultations to collectors, designers, and retailers.

Product overview

Global Diamond Group is a wholesale diamond company specializing in natural fancy color diamonds, founded in 2000. The company offers a portfolio of products including rare natural fancy color diamonds (yellow, pink, blue, red), hand-crafted jewelry, and colored gemstones. Notable signature pieces include The Juliet Pink (30ct Fancy Intense Pink), The Giant's Tear (31ct Fancy Blue), The Sienna Star (73ct Fancy Vivid Yellow), and The Golden Eye (40ct Fancy Vivid Yellow). Services include custom jewelry design and expert consultations for collectors and luxury boutiques worldwide.

Differentiator

Problem solved

Functional benefit

Products and services

• Natural Fancy Color Diamonds Rare natural fancy color diamonds including yellow, pink, blue, and red diamonds sourced, evaluated, and curated for luxury boutiques, collectors, and designers worldwide.

Quantifiable outcome

• Transformed 43ct Fancy Intense Yellow diamond into 40ct Internally Flawless Fancy Vivid Yellow through expert recutting
• +3 more outcomes

Named customers6 records

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• Glenn SpironotableStrategic or Co-development PartnerCollaboration with famed jeweler Glenn Spiro for The Sienna Star project. Spiro created a flexible ring with diamond pave setting to complete the vision for the 73ct Fancy Vivid Yellow Asscher Cut diamond, demonstrating the company's approach to partnering with renowned designers for finished jewelry pieces.

Scale indicators4 records

Recent moves5 records

Expansion highlights4 records

Market position

Weaknesses5 records

Competitive moat3 records

Customer concentration

• Instagraminstagram.com/globaldiamondgroupusa
• LinkedInlinkedin.com/company/globaldiamondgroup

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Global Diamond Group & Sons LLC