Introduction

Grandview Klein Diamonds (GKD) is a globally respected diamantaire renowned for its artistry, integrity, and innovation across every facet of the natural diamond journey. With deep roots in the global diamond trade and a reputation built over generations, GKD combines master craftsmanship with cutting-edge technology to deliver diamonds of extraordinary beauty, provenance, and precision.

From breathtaking 100-carat stones and rare fancy colors to elegant everyday diamonds, our polished collection spans the full spectrum of luxury. Each stone is meticulously cut in one of our three world-class factories, where over 200 years of collective experience power our relentless pursuit of excellence. This dedication has earned us global acclaim for quality and consistency.

At the heart of GKD is a vertically integrated and rigorously traceable supply chain - one of the most robust in the industry. In a world where consumers demand transparency and trust, our partners rely on us to deliver not just exceptional diamonds, but peace of mind. Our consistent access to natural rough through our status as a De Beers Sightholder reinforces our ability to meet demand in a dynamic market.

GKD is a proud partner to many of the world’s most prestigious independent retailers across the United States, the Far East, and the Middle East. Our team’s ability to navigate cultural nuance, anticipate evolving preferences, and tailor solutions makes us a valuable strategic resource to our retail clients. Whether a store is looking for a showstopping piece of high jewelry or the perfect 1.50 carat center stone, we offer breadth, depth, and agility that elevate the retail experience.

What truly sets GKD apart is our commitment to helping our partners shine. We don’t just supply diamonds. We support the full retail journey through personalized assortments, exclusive product offerings, and marketing collaboration. Our mission is to empower retailers with the inventory, tools, and storytelling that help their customers say “yes” with confidence.

As one of the most trusted names in natural diamonds, GKD is proud to help shape the future of the industry - ethically, beautifully, and brilliantly.

Rough to Polished Transformation

GKD operates three state-of-the-art diamond cutting factories (located in Botswana, Namibia and South Africa), each dedicated to the meticulous art of transforming rough diamonds into masterpieces of brilliance. Staffed by master cutters and artisans with generations of expertise, our factories combine time-honoured techniques with the most advanced technologies available, ensuring precision, consistency, and exceptional quality at every stage of production.

Located strategically to support both volume and specialization, our cutting facilities are capable of producing everything from perfectly proportioned commercial goods to rare, high-value stones of extraordinary size and complexity. This global footprint allows GKD to respond with agility to market demand while maintaining the highest standards of craftsmanship and ethical manufacturing.

Corporate Social Responsibility

At GKD, responsibility isn’t a department - it’s a way of life. Across our global operations, a culture of integrity, transparency, and accountability is embedded in everything we do, championed by our 200+ employees and upheld at every level of leadership.

We believe that doing business well means doing good. That’s why our commitment to ethical sourcing goes beyond compliance. Every diamond we manufacture is backed by a rigorous supply chain management system designed to uphold the highest standards of traceability, transparency, and human rights. As a De Beers Sightholder, we proudly align with industry best practices and push them forward.

But our values extend far beyond our own walls. We are deeply committed to uplifting the communities where we operate. Working hand-in-hand with local leaders, we support sustainable development programs that deliver long-term impact, from education and healthcare to dignity and opportunity.

Through our joint community trust with retail partners, we’ve helped nurture the next generation of changemakers: rebuilding a computer science lab, equipping schools with essential technology and supplies, and providing young girls with access to feminine hygiene products. We’ve launched college scholarships, distributed school uniforms and shoes, built a dialysis center, and more, all with the belief that no act of kindness is too small, and no investment in humanity is ever wasted.

At GKD, actions speak louder than words. Our legacy is not only measured in carats, but in character, and we are proud to lead by example.

Core Business Activity

Polished manufacturer and jewellery artisanship

Product Range Overview

Core Polished Diamonds

Finely made diamonds in all shapes and sizes (+1 carat)

Specialist Polished Diamonds

GKD specializes in exquisitely crafted, natural diamonds of 2+ carats and rare and exceptional stones. GKD is also the preferred supplier of all shapes and sizes (+1 carat) to its retail clientele. Our collection also includes a curated selection of extraordinary fancy color diamonds, each chosen for its rarity, beauty, and brilliance.

Diamond Jewelry

GKD’s diamond jewelry showcases exceptional craftsmanship, featuring natural diamonds in designs that range from timeless elegance to bold, statement pieces. Each creation reflects the brand’s commitment to quality, beauty, and authenticity, bringing rare diamonds to life in jewelry that is as meaningful as it is magnificent.

Polished Outcome

Additional Services

Polished assortments catered to retailers’ specific needs; one of a kind diamond jewellery; in store and factory-based training sessions; trunk show and special event support; customized marketing/advertising programs; on time delivery.