What Evidence Supports Sustainability Claims in Jewelry?

Jewelry brands have historically relied on story-driven marketing to tap into consumers' emotions, especially those seeking engagement rings. Now the story is evolving to reflect the need for sustainability, ethical sourcing, and lab-grown diamonds, influenced by changing consumer attitudes and industry ESG policies.      

However, simply making sustainability claims isn't enough to make an impact. Highly discerning consumers and regulatory agencies look for supporting evidence, including lifecycle assessments, energy sources (for LGDs), compliance audits and certifications, digital product passports (DPPs), chain-of-custody (CoC), and on-page disclosures. Sustainable brands must also present information without "greenwashing" claims, embracing transparency in their storytelling.         

Lifecycle Assessments (LCAs)

In the case of a sustainable ring, LCAs are peer-reviewed studies that assess the environmental impact of the ring's gemstones and metals across the product's entire lifespan. LCAs present relevant metrics, such as:

• Greenhouse gas emissions (GHG)

• Water consumption

• Total land disturbance

GHG is measured in carbon dioxide equivalent per carat or gram. Plus, for the LCAs to be accepted by regulatory agencies, they must follow strict ISO 14040 and 14044 standards.

Energy Sources

Lab-grown diamonds (LGDs) are surging in popularity due to their price and sourcing. Since LGDs are grown in a lab and not mined, they're viewed as more ethical than mined diamonds. However, to truly market LGDs as the clear alternative, one must look at the energy sources that power LGD labs.

LGD labs must generate the heat and pressure needed for chemical vapor deposition (CVD) and high-pressure, high-temperature (HPHT) synthesis. These processes still require massive amounts of energy. Therefore, to truly wear the badge of sustainability, labs must prove they use renewable energy sources.

Acceptable evidence includes power purchase agreements (PPAs) with renewable energy grids, real-time data on solar and wind power, and verified renewable energy certificates (RECs).

Audits and Certifications

Sustainable brands and boutiques should include audit and certification protocols in their transparency statements, as illustrated by Diamondere lab-created diamond rings, which are certified by the International Gemological Institute (IGI). The company also conducts sustainability audits for compliance with the California Supply Chain Transparency Act (CSTCA) to maintain ethical sourcing for all products. 

Conscious consumers can also ask sustainable boutiques about SCS-007 certifications that assess:

• Traceable origins

• Environmental friendliness

• Climate neutrality

• Ethical labor conditions

• Sustainability investments

Boutique owners can also look for certifications from the Responsible Jewellery Council (RJC) when sourcing products, which verifies proof of sustainability and ethical production on a corporate level.

Digital Product Passports (DPP)

Integrating digital product passports (DPPs) allows sustainable companies to build an extra layer of trust with consumers. DPPs are secure digital profiles that customers can access through a QR code or an NFC tag. Customers can view information about:

• Jewelry material composition

• Environmental impact

• Manufacturing facilities

• Instructions for eliminating waste

DPPs are also mandated under the EU’s Ecodesign for Sustainable Products Regulation (ESPR).

Chain-of-Custody (CoC)

A piece of jewelry may have sustainable origins, but a chain of custody (CoC) tracks the physical custody of materials, ensuring products remain sustainable throughout the entire supply chain. Companies that claim sustainability should keep CoC documentation, as it represents an unalterable record of transactions from the cutters to the polishers to the final bench jewelers.

On-Page Disclosures

Sustainability transparency should be built into a company's web design, product information, and packaging. Website visitors should be able to easily navigate to disclosure pages that state product certifications, commitments to ethical sourcing, and reports.

Citations should also be included with claims. For example, if an online boutique claims its wedding bands are made from 96% recycled gold, there should be a link to an SCS certification in the footnote or in the text.     

Avoid Greenwashing

Greenwashing is the practice of presenting a product as more sustainable than it actually is. A company that sells recycled jewelry can get caught in a greenwashing trap despite its best intentions for selling sustainable goods. CoC documentation is a supplier's best line of defense, as it can prove the sustainability of the entire product lifecycle.

To avoid legal risks associated with greenwashing, companies can adjust their marketing language if they don't have a complete CoC or adequate certifications. For example, instead of labeling a lab-grown stone as "100% eco-friendly," a company could say, "Our stones are lab-grown in facilities powered by 100% hydroelectric energy." This language leans heavily on transparency, which builds trust with consumers without taking legal risks.     

Any linked sustainability reports should include the most recent data available for sustainable production. Web designers should regularly audit website content to update report statistics and certifications.

Build a Credible Sustainable Brand

Sustainable jewelry brands are built on verifiable claims, not eco buzzwords. Attract conscious consumers with information they can trust. Prioritize credibility through CoC documentation, sustainability certifications, LCAs, DPPs, compliance auditing, disclosure statements, and transparency in marketing.

Inform your product development strategy with the latest trends in environmental sustainability, governance and compliance, clean energy, and social responsibility.