Grandview Klein Diamond Group

What Grandview Klein Diamond Group does

Grandview Klein Diamond Group (GKD) is a fourth-generation, family-owned diamond manufacturer and direct supplier headquartered at 580 5th Avenue in New York's diamond district. The company operates as a De Beers triple Sightholder, receiving direct rough diamond allocations from mines in South Africa, Botswana, and Namibia, with state-of-the-art manufacturing facilities in Johannesburg, Windhoek, and Gaborone plus a flagship cutting facility in Manhattan. It supplies loose polished diamonds ranging from everyday merchandise to 100+ carat D-flawless stones and fancy colored diamonds (pink, blue, yellow, purple) to high-end independent retail jewelers, American Gem Society member stores, and designer brands across North America, the Middle East, and Asia.

Name

Grandview Klein Diamond Group

Legal name

Grandview Diamond Group LLC

Website

https://gkdg.com

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

11–50 employees

Short description

Grandview Klein Diamond Group is a fourth-generation, family-owned De Beers triple Sightholder that directly manufactures and supplies loose polished diamonds — from everyday to 100+ carat D-flawless and fancy colored stones — to high-end independent retail jewelers in the US, Africa, Israel, and Hong Kong.

Ownership category

akta.pro rank

Product category

Diamond Manufacturing & Wholesale

NAICS

Jewelry, Watch, Precious Stone, and Precious Metal Merchant Wholesalers (423940)

SIC

Jewelry, Precious Metal (3911), Wholesale-Jewelry, Watches, Precious Stones & Metals (5094)

akta.pro industry

PRIMARYCRAKAJAA

Diamond Cutting & Polishing (Manufacturing)

Consumer Products & Retail/Jewelry, Watches & Luxury Accessories/Gemstones & Diamonds (Cutting, Trading, Certification)

SECONDARYCRAKAJAD

Polished Diamond Trading & Brokerage

Consumer Products & Retail/Jewelry, Watches & Luxury Accessories/Gemstones & Diamonds (Cutting, Trading, Certification)

SECONDARYCRAKAIAA

Fine Jewelry Manufacturing (Precious Metals & Gem-Set)

Consumer Products & Retail/Jewelry, Watches & Luxury Accessories/Jewelry Manufacturing & Private Label

SECONDARYCRAKAHAF

Made-to-Order Gemstone Sourcing & Custom Cutting Coordination

Consumer Products & Retail/Jewelry, Watches & Luxury Accessories/Custom Jewelry Design & Bespoke

Keywords

• Diamond manufacturing
• Loose diamond wholesale
• Natural diamond supply
• Diamond cutting services
• Fine jewelry distribution

Headquarters

HQ city

New York

HQ country

United States

HQ region

North America

Offices7 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Operations, Supply Chain, Marketing or Sales, Infrastructure

Revenue model

1. Polished Diamond Sales: GKD sells polished diamonds ranging from everyday merchandise to super-luxury diamonds (2-100+ carats), including white and fancy colored diamonds. Direct sourcing from De Beers allows competitive pricing.
2. Diamond Manufacturing Services: Cutting and polishing services for diamonds in their state-of-the-art factories in New York, Johannesburg, Namibia, and Gaborone.
3. High Jewelry and Custom Pieces: Creation and sale of fine jewelry pieces featuring rare and exceptional diamonds, including rings by designer Saul Fraiman.
4. Jewelry Consignment: GKD offers jewelry on consignment to retail partners as part of their retailer support programs.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels6 records

Core offering

Grandview Klein Diamond Group manufactures, cuts, and supplies natural polished diamonds ranging from everyday merchandise to rare 100+ carat fancy colored and flawless stones, operating as a De Beers triple Sightholder with manufacturing facilities in New York, South Africa, Namibia, and Botswana. The company sells primarily B2B to retail jewelers worldwide, with sales offices in New York, Miami, Tel Aviv, and Hong Kong, and also offers designer high jewelry and retail partner support services including education, marketing, and diamond provenance tracing via Tracr blockchain.

Product overview

Grandview Klein Diamond Group (GKD) is a fourth-generation family-owned diamond manufacturer and international diamantaire offering an integrated portfolio of products and services. Core offerings include natural diamonds (from everyday to 100-carat D-flawless rarities and fancy colored stones), diamond cutting and polishing services across four global facilities, and designer high jewelry through the Saul Fraiman collection. The company supplements its product offerings with retail partner support programs including education/training, marketing materials, and exclusive African mine/factory trips. Diamond provenance tracing via Tracr blockchain is offered as a value-added service. The company operates as a direct-to-retailer model, supplying prestigious jewelers worldwide with polished diamonds priced for mutual success.

Differentiator

Problem solved

Functional benefit

Products and services

• Natural Diamonds
• Diamond Cutting & Polishing Services
• Saul Fraiman Designer Jewelry Collection

Quantifiable outcome

• Retail partner reports business growth of 5x through access to Grandview Klein inventory
• +1 more outcomes

Named customers5 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Ten partnerships are on record, tiered notable, core and minor.

• London JewelersnotableStrategic or Co-development Partner · 15 June 2026London Jewelers commissioned Grandview Klein Diamonds to cut a 63-carat natural rough diamond into a 20.26-carat D-color, flawless, old mine cushion-cut diamond as part of London Jewelers' 100th anniversary celebration. The stone was cut in Botswana as part of the De Beers Group Origin program using Tracr blockchain technology for provenance tracing.
• De Beers GroupcoreStrategic or Co-development PartnerGrandview Klein is a De Beers triple Sightholder receiving direct supply of diamonds from mines in South Africa, Botswana, and Namibia. They participate in the De Beers Origin program with Tracr blockchain technology for traceability.
• PhillCo Development FoundationnotableStrategic or Co-development PartnerNamibian partner created to source and fund local developments for poverty eradication. Partnership focused on social investment including dialysis machine donations, school support, and community development projects.
• Philline Angula Development InvestmentsnotableStrategic or Co-development PartnerLocal Namibian partner working with Grandview Klein on CSR initiatives including Eros Primary School donations, infrastructure repairs, and community development projects in Namibia.
• Namibia Diamond Trading Company (NDTC)coreStrategic or Co-development PartnerDe Beers subsidiary in Namibia from which Grandview Klein receives sight allocations of high-quality alluvial rough diamonds. NDTC CEO Brent Eiseb participates in company events and ceremonies.
• American Gem SocietynotableStrategic or Co-development PartnerMoshe Klein transferred GKD's membership to American Gem Society, focusing on AGS retail stores as key customers. AGS members are known for certified gemologists and commitment to training.
• RitaninotableTechnology or IntegrationParent company of digital marketplace Ritani. Grandview Klein invested over $100 million in technology including this digital marketplace platform.
• Africa AriseminorStrategic or Co-development PartnerOrganization providing platform for donations to small schools with little funding in rural areas throughout southern Africa. Grandview Klein donated through Africa Arise to Dipetlelwane Primary School in South Africa.
• Bera Diamond AcademyminorStrategic or Co-development PartnerVocational college for deaf and disabled students in the diamond and mining industry. GKD assists with repairing polishing wheels, supplies used equipment, and provides laser sawing services.
• Diamond Girls Jewelry StoreminorStrategic or Co-development PartnerIdaho-based jewelry retailer that co-sponsored donations of 2,000 sanitary pads for Eros Primary School girls as part of Grandview Klein's community outreach program.

Scale indicators4 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• Tiffany & Co. (LVMH): Tiffany & Co. is a global luxury jewelry retailer that sources and uses polished diamonds at scale and competes at the high jewelry tier where GKD sells its most exceptional stones. As a downstream customer/competitor, it overlaps with GKD's premium retail and high-jewelry positioning.
• Signet Jewelers: Signet Jewelers is the world's largest retailer of diamond jewelry (Kay, Zales, Jared). It is a significant buyer of polished diamonds and competes with GKD's independent-retailer customers, with growing vertical integration into the supply chain.
• De Beers Group: De Beers is both GKD's most important supplier (Triple Sightholder relationship) and a broad incumbent across the diamond value chain through its own rough sales, Tracr blockchain, and downstream brands. It overlaps with GKD as ecosystem leader and upstream gatekeeper.

Direct peers

• KGK Group: KGK Group is a global diamond manufacturer and supplier with mining, cutting, and trading operations. It competes with GKD in serving mid- to high-end retail jewelers with broad polished diamond inventory.
• Rosy Blue: Rosy Blue is a leading global diamond manufacturing and trading company with operations across cutting centers. It competes head-to-head with GKD in the wholesale polished diamond segment serving jewelry retailers worldwide.
• Diarough Group: Diarough is a global vertically integrated diamond manufacturer with cutting and polishing operations across multiple geographies, serving retail jewelers through B2B wholesale channels comparable to GKD's model.
• Kiran Gems: Kiran Gems is the world's largest manufacturer of diamonds, operating a globally integrated rough-to-polished model in India and abroad. Like GKD, it is a major B2B diamond manufacturer serving wholesale and retail customers worldwide.
• Leo Schachter Diamonds: Leo Schachter Diamonds is a US-based diamond cutter and supplier with manufacturing operations in Africa and direct retail-jeweler relationships. It is one of GKD's closest US-based direct competitors in polished diamond wholesale.

Emerging players

• Petra Diamonds: Petra Diamonds operates diamond mines in southern Africa and sells rough through tender and supply arrangements. While primarily a miner rather than a B2B manufacturer like GKD, it is a comparable counterpart in the rough diamond supply chain serving similar end customers.
• Brilliant Earth: Brilliant Earth is a US-based online jewelry retailer with strong positioning in ethically sourced and lab-grown diamonds. It represents the digital and lab-grown competitive threat to GKD's traditional independent-retailer base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/grandview-klein-diamond-group

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Subsidiaries3 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 Grandview Klein Diamond Group