Sustainability
Beauty That
Does No Harm
At ZIZOV Diamonds, sustainability is not a marketing position. It is a fundamental commitment that runs through every stone we source, every piece we craft, and every relationship we build.
From Antwerp's Diamond District — the most regulated and transparent diamond trading hub in the world — we have held this standard since 1994.
Est. 1994 — Antwerp Diamond DistrictConflict-Free
Every diamond, fully Kimberley Process compliant and sourced only from verified ethical suppliers.
Lab-Grown Options
Chemically identical to natural diamonds — with a significantly reduced environmental footprint.
Certified Always
Every centre stone certified by GIA, IGI, or HRD — independent verification, no exceptions.
Antwerp Standards
Operating from the world's most regulated diamond hub — the highest industry standards by default.
Our Approach to
Responsible Beauty
Sustainability at ZIZOV goes beyond a checklist. It means asking hard questions about where materials come from — and making sure the answers are ones we are proud of.
The diamond industry has faced scrutiny for good reason — and we believe transparency is the only appropriate response. Every purchasing decision we make is guided by a clear set of ethical principles: no conflict diamonds, full traceability where possible, and independent certification as a non-negotiable minimum.
We operate from Antwerp — the city that trades more than 86% of the world's rough diamonds and hosts the strictest regulatory framework in the global diamond industry. That environment shapes how we work, who we work with, and what we are willing to put our name on.
The Kimberley
Process & Beyond
All natural diamonds sold at ZIZOV are fully compliant with the Kimberley Process Certification Scheme — the international system that prevents conflict diamonds from entering the legitimate diamond trade. But we go further than compliance.
We work exclusively with a carefully vetted network of suppliers who share our commitment to human rights, fair labour practices, and environmental responsibility. We ask questions. We visit. We verify.
- Full Kimberley Process compliance on every natural diamond
- Suppliers selected for ethical track record, not just lowest price
- Ongoing supplier audits and relationship-based sourcing
- Full stone traceability from origin to certificate
- No sourcing from regions with known human rights violations
Lab-Grown
Diamonds
Created in controlled environments using advanced technology, lab-grown diamonds are chemically, physically, and optically identical to natural diamonds — with a considerably lower environmental impact and full GIA, IGI, or HRD certification.
Identical Beauty,
Lighter Footprint
Lab-grown diamonds require no mining — eliminating the land disruption, water usage, and carbon emissions associated with extracting natural stones. They are created using energy — and as global energy grids shift toward renewable sources, that footprint continues to decrease.
At ZIZOV, we offer a full range of lab-grown jewellery across rings, earrings, bracelets, and pendants — all set in 18 Karat gold, certified by GIA, IGI, or HRD, and crafted to exactly the same standard as our natural diamond collection.
Chemically Identical
The same crystal structure, optical properties, and physical hardness as mined diamonds. No difference under a loupe, a spectrometer, or to the naked eye.
Fully Certified
Every lab-grown stone we sell carries an independent GIA, IGI, or HRD certificate. The same grading, the same rigour, the same guarantee of quality.
More Stone, Same Budget
Lab-grown diamonds allow you to select a significantly larger or higher-grade stone within the same budget — without compromise on quality or certification.
You Have the Right
to Know
We believe every customer has the right to know exactly where their diamond comes from, how it was graded, and what they are truly purchasing. That is why every stone we sell comes with its original gemological certificate — not a copy, not a summary.
Our non-commissioned experts will walk you through the certificate in full detail during your consultation: origin information, grading methodology, and what each characteristic means for the beauty and value of your specific stone.
- Original GIA, IGI, or HRD certificate with every stone
- Honest, detailed explanation of all 4 Cs at point of purchase
- No hidden markups — transparent, honest pricing
- Non-commissioned team with no incentive to oversell
- Written documentation for every bespoke commission
Thoughtful in
Every Detail
Our commitment to responsibility extends to how we present and deliver every piece. From our signature presentation boxes to the way we ship worldwide, every decision is made with care for the experience and the environment.
Each ZIZOV piece is delivered in our signature presentation box with all original documentation. We ship using fully insured, tracked services to ensure your piece arrives safely — wherever you are in the world.
Regulated by the
World's Best
Operating in Antwerp is itself a sustainability credential. The city's diamond industry is governed by the strictest regulatory framework in the world — and ZIZOV has been part of it for over 30 years.
The Gold Standard
The world's most trusted gemological authority. GIA created the international diamond grading system and the 4 Cs framework used across the global industry. A GIA certificate is accepted by every reputable jeweller, insurer, and reseller worldwide.
The Lab-Grown Leader
One of the largest independent gem labs in the world, with deep expertise in lab-grown diamond grading. IGI certificates are fully accepted by the global trade and are especially prevalent in Antwerp — where IGI was founded.
Our Antwerp Institute
Founded in Antwerp — as are we. HRD is the Antwerp Diamond Council's own grading laboratory and one of Europe's most respected certification bodies. For ZIZOV, working with HRD is a point of particular pride: two Antwerp institutions, sharing the same commitment to quality.
"A diamond should represent love — and nothing that brings harm to others can ever do that. It's not idealism. It's what being a jeweller actually means."ZIZOV Diamonds — Antwerp, Est. 1994
Discover Our
Responsible Collections
Explore our full range of natural and lab-grown diamond jewellery — all ethically sourced, independently certified, and crafted in Antwerp.