Quality Standards & Craftsmanship Philosophy
Our production is anchored by a single RJC-certified manufacturer—an ecosystem centered on human dignity and environmental health. Verified by ISO standards and Intertek audits, we merge technical accountability with rigorous stress testing. The result is lab-verified durability, crafted with an uncompromising conscience.
Our Makers
Behind every BY TONIN piece is a single, trusted manufacturer committed to human dignity and environmental health.
To ensure absolute supply chain transparency, our partner is certified by the Responsible Jewellery Council (RJC) and audited by Intertek. This partnership guarantees that every hand-finished design meets the most rigorous ethical and social standards in the global industry.
We foster a responsible manufacturing ecosystem that moves beyond industry norms, prioritising a human-centric production model that empowers our makers:
- Living Wages & Financial Stability: Ensuring fair compensation and economic security, fostering a culture of respect and long-term stability for every artisan.
- Empowerment & Diversity: Actively promoting gender equality and workplace inclusivity, supporting underrepresented groups within the jewellery supply chain.
- Family Support: Providing flexible working arrangements for parents to ensure a healthy balance between professional craft and family life.
- Professional Mentorship & Upskilling: Investing in the future of the trade through technical training and skill development for sustained career growth.
- Verified Ethical Labour: Adhering to the RJC Code of Practices, we guarantee a safe, transparent, and regulated environment for all employees.
A Responsibility to Form and Earth
We have partnered with a manufacturer that integrates environmental management into the very fabric of production.
Their commitment to sustainable manufacturing is anchored by ISO 14001 (Environmental) and ISO 9001 (Quality) certifications—rigorous frameworks that ensure resource management, waste reduction, and energy efficiency are not merely goals, but a refined, daily reality.
- Low-Impact Sourcing: The process prioritises responsible sourcing to minimise the collective footprint. This deliberate choice ensures the weight and brilliance of the jewellery are achieved through a supply chain that respects delicate ecosystems and adheres to global ethical standards.
- Regenerative Impact: For every order placed with our manufacturer, a tree is planted—a tangible contribution to reforestation and acknowledgement of the resources we borrow from the earth.
- Modern Precision: By merging technical, machine-led precision with hand-finished detailing, the workshop achieves a level of durability that exceeds industry norms.
Structural Integrity & Durability
True quality is found in the details beneath the surface. Our plated pieces are created through a six-stage plating process that prioritises structural integrity, durability and hypoallergenic safety.
I. Solid Sterling Silver Base
Every piece begins with a solid foundation of recycled sterling silver. Chosen for its purity and weight, this premium base provides the essential high-strength core for every BY TONIN design.
II & III. Double Silver Plating
To ensure a flawless bond, we apply two distinct layers of silver plating over the core. This double-reinforcement creates an ultra-smooth, high-strength foundation, preparing the metal for the following technical layers.
IV. Palladium Barrier
A member of the platinum group, Palladium is typically reserved for high-complication engineering and often omitted in jewellery due to cost. We use it as an anti-tarnish barrier—preventing silver from migrating into the gold and stopping greying before it begins. It also provides a durable, naturally hypoallergenic, nickel-free finish.
V. Micron Precision
Each design is coated in refined layers of precious metal, exceeding industry standards for thickness and durability Gold pieces are finished in 1 micron, with our Gold Vermeil at a minimum of 2.5 microns. Silver pieces are coated in Rhodium or Platinum—rare platinum-group metals that deliver a bright, tarnish-resistant finish with added strength.
VI. Nano-Ceramic E-Coating
The final layer is an advanced electrophoretic shield. This nano-ceramic e-coating provides an invisible, nickel-free barrier against sweat, moisture, and oxidation. It is the technical seal that
Laboratory Stress Testing & Data-Led Integrity
Beyond the craft, we rely on data. Every production batch undergoes a rigorous sequence of laboratory stress tests to verify that our pieces exceeds the demands of daily wear.
Abrasion & Friction Testing
We simulate the physical friction of years in a matter of hours. By subjecting our jewellery to mechanical abrasion testing, we ensure the surface maintains its lustre without premature fading or wear.
Chemical Resistance Testing
Real-world exposure is simulated through salt-spray and sulphur-dioxide testing. By replicating contact with sweat, perfumes, and urban pollution, we verify the integrity of our anti-tarnish barriers in the most corrosive environments.
Heat & Humidity Testing
Through cycles of high heat and intense humidity, we replicate the stressors of diverse global climates. This accelerated ageing process confirms that the structural bond between the core and the finish remains unyielding, regardless of the setting.
Transit & Structural Testing
To ensure every piece arrives in its purest state, we conduct vibration and shock testing. This validates that the jewellery can withstand the physical rigours of global transportation, arriving secure and ready for life.
Verified Integrity
Our commitment is always backed by evidence. Every production run is confirmed through triple-point measurement—a process that verifies plating consistency at three distinct points on the piece—and supported by independent laboratory reports.