CrownStone Diamonds — a trusted global diamond company specializing in ethically sourced, conflict-free diamonds from Botswana, Canada, Namibia, and South Africa.

Contact Info
Phone +1 415-518-0710
Email cs@crownstonediamonds.com
Location 35-01 36th Ave, Astoria, NY 11106
Contact Info
Phone 415-518-0710
Email cs@crownstonediamonds.com
Location 35-01 36th Ave, Astoria, NY 11106
Diamonds from CrownStone Diamonds

Diamonds from CrownStone Diamonds come from mines and recovery areas in Botswana, Canada, Namibia and South Africa.

Kimberley Process Compliant

All of the countries where diamonds from CrownStone Diamonds are sourced are participants in the Kimberley Process, with the diamonds also undergoing additional independent verification.

Why CrownStone

Protecting People and the Planet.

Best Practices

OECD Due Diligence Aligned

All diamonds from CrownStone Diamonds are sourced in alignment with the Organisation of Economic Cooperation and Development's (OECD) Due Diligence Guidance.

ISO 14001 Certified

The working mines and key facilities are independently certified to the ISO 14001 environmental management system standard.

Biodiversity Pledge

CrownStone Diamonds is a signatory to the Convention on Biological Diversity's 'Business and Biodiversity Pledge'.

Verified Origins
X
Our Purpose

Each diamond is recovered in a way that respects and protects people the environment and the communities around where the diamonds are sourced. Our focus is on having net positive environmental outcomes so we strive to protect the environment by innovating continuously, and responding to environmental challenges and opportunities systematically. To achieve this, we work closely with stakeholders and partners.

Internal Compliance Programmes

Standards Behind Every CrownStone Diamond.

01.

Best Practice Principles

All mines where diamonds from CrownStone Diamonds originate comply with the rigorous standards of the Best Practice Principles (BPP) assurance programme, covering business, human rights, social, environmental and mining risks. All operations must complete a self-assessment annually and host regular audits by third-party verifiers.

Learn More
02.

The Social Way 3.0

The Social Way — a framework for social performance — governs our approach. The mines where the diamonds are sourced abide by its obligations, ensuring opportunities for development are maximised and potential negative social impacts are avoided or mitigated. The Social Way 3.0 introduces a new integrated Social Way Management System.

Learn More
03.

External Governance & Frameworks

Each mine where diamonds from CrownStone Diamonds originate abides by, and is audited against, a robust code of practices outlined by the Responsible Jewellery Council (RJC) — addressing human rights, labour rights, environmental impact, mining operations and product disclosure.

Learn More

External certification, governance frameworks and internal compliance. Learn more.

SOURCING IN NUMBERS

Four nations. One standard of excellence.

Of consumers say provenance influences their diamond purchase.
01.
Sourcing Countries
Nations
02.
Independent Verifications
M
03.
Consumer Confidence in Verified Origins.
%
Sourcing Origins

Four Countries. One Legacy.

Sourcing Origin

Botswana

Image
Sourcing Origin

Canada

Image
Sourcing Origin

Namibia

Image
Sourcing Origin

South Africa

Image
Get in Touch

Share Your Sourcing Enquiry.

Trusted by the Industry (4.8/out of 200+ partners)

CrownStone Diamonds has transformed how we communicate the provenance of our stones. Their verified narratives give our customers confidence and tell a story that goes far beyond the 4Cs. The transparency they bring to the supply chain is invaluable for any brand that cares about ethical sourcing.

Guy Hawkins

Jewelry Brand Director

As an artisanal miner advocacy group, we've seen firsthand how CrownStone's focus on traceability and fair-value purchasing creates real impact. Their blockchain documentation and community impact reports help ensure that the benefits of diamond mining reach the communities at the source.

Ralph Edwards

Mining Advocacy Lead

The level of detail in CrownStone's provenance reports is exceptional. They don't just tell you where a diamond came from — they document the entire journey, from the mine to the cutting wheel to the final setting. For collectors and investors who care about origin, this level of assurance is unmatched."

Devon Lane

Private Collector

The sourcing of diamonds from CrownStone Diamonds is in full alignment with the requirements of the Organisation of Economic Cooperation and Development's (OECD) Due Diligence Guidance for Responsible Mineral Supply Chains.

Learn More
  • Full alignment with OECD Due Diligence Guidance
  • Assurance for traders, retailers and consumers
  • Responsibly sourced diamond supply chain
  • Independent verification at every stage

Each mine where diamonds from CrownStone Diamonds originate abides by, and is audited against, a robust code of practices outlined by the Responsible Jewellery Council (RJC).

Learn More
  • Robust code of practices
  • Human rights protections
  • Labour rights protections
  • Environmental impact standards
  • Mining operations oversight
  • Product disclosure requirements

The mines where diamonds from CrownStone Diamonds originate comply with the Voluntary Principles on Security and Human Rights, established by the US and UK governments, companies in the extractive and energy sectors and NGOs.

Learn More
  • Operational safety and security
  • Respect for human rights
  • Annual risk assessments
  • Pre-employment screening
  • Annual security and community training
  • Contract termination on human rights abuses
External Governance

Frameworks.

The sourcing of diamonds from CrownStone Diamonds is underpinned by both internal compliance programmes and external certification schemes and governance frameworks.

All Practices
All Practices