Made for those who want beauty with integrity, SMO Gold puts provenance at the heart of every piece. It lets you see exactly where your gold comes from and the positive change it helps to fuel through responsible mining practices. When your jewellery begins with purpose, its meaning becomes even deeper. Lets understand the future of Gold.

What defines SMO Gold, at a glance:

  1. What is Single Mine Origin (SMO) Gold
  2. Why SMO Gold matters
  3. The bigger Picture behind SMO Gold
  4. Track your SMO Gold
  5. Experience SMO Gold at Autumn and May
Single Mine Origin (SMO) Gold

What Is Single Mine Origin (SMO) Gold?

Single Mine Origin (SMO) Gold is a revolutionary global benchmark for gold and jewellery. It guarantees responsible, ethical, and transparent mining practices, as well as complete traceability of gold from a piece of jewellery to its originating mine. SMO adheres to strict standards, including the World Gold Council’s Responsible Gold Mining Principles and its own social and environmental initiatives.

A Commitment to Clarity

SMO was created in 2017 by the Betts Group to answer a growing demand for ethical clarity. When you ask questions like, "Was this gold mined responsibly?" or "Does it support local communities?", traditional supply chains often have no clear answers. SMO Gold is sourced from mines across Mali and Côte d’Ivoire, each chosen for their commitment to responsibility, transparency, and positive community impact.

Gold With a Verified Origin

SMO Gold is just what it sounds like gold sourced from one single, responsibly run mine. Instead of being mixed with gold from unknown origins, each batch is kept completely separate and is trackable from the mine, through refining, to the final piece of jewellery. This provides a level of provenance that traditional gold simply cannot offer. You know exactly where your gold was mined, how it was refined, and the journey it took to our workshop.

From Mine to Maker, A Transparent Journey

Most jewellers can tell you the carat of their gold, but not its origin. With SMO gold, we can tell you precisely which mine your gold came from. Every batch has a unique QR code. By scanning it, you can see:

  • Which mine your gold is from
  • The environmental and social programs the mine supports
  • Independently audited ESG (Environmental, Social, and Governance) data

Why SMO Gold Matters to You

Every SMO Gold Wedding Rings and SMO-Certified Gold Jewellery you purchase has a lasting impact on the lives of local people and the environment. Choosing SMO Gold for your jewellery means you’re making a choice that has a lasting, positive impact. It’s about more than just beauty; it’s about integrity.

  • 100% Traceable

    Every piece of SMO Gold jewellery has its own digital identity. By scanning your QR code, you can see the mine, the community, and the people behind your gold.

  • Responsibly Sourced

    SMO ensures your gold is sourced from partners who operate according to the World Gold Council’s ‘Responsible Gold Mining Principles’

  • Audited Chain of Custody

    SMO maintains an audited chain of custody from the mine to your jewellery, with process assurance from world-class audit programs.

  • Affordable

    SMO Gold is affordable, with no premium price tag compared to other ethical golds like Fair Trade or Fair Mined Gold.

  • Community Support

    Your SMO Gold jewellery purchase contributes to vital social, environmental, and cultural support for local communities, helping transform the gold industry for the better.

  • Conflict Free

    With full provenance and independent auditing, you can be completely confident that your gold has no ties to conflict zones or unregulated mining. Every piece is sourced from responsible, legitimate operations with full accountability at every stage.

  • Mercury Free

    All SMO gold is guaranteed to be 100% mercury-free, as it is not required in the responsible gold mining process.

  • The SMO Hallmark

    Since 2020, the official SMO hallmark has been introduce at UK assay offices, giving your jewellery a special SMO stamp of integrity.

SMO Gold

The Bigger Picture Behind SMO Gold

The SMO Foundation

The SMO Foundation extends the positive impact of responsible mining into broader global initiatives - including conservation, healthcare, and social equity projects. Launched at the Natural History Museum in London, the foundation partners with global charities to support communities and ecosystems worldwide. When you choose SMO Gold, you’re joining a wider movement for positive change.

Driving Transformation in the Jewellery Industry

SMO proves that full traceability and responsibility can be achieved without increasing prices. This sets a new expectation for the entire industry, encouraging more mines and jewellery houses to embrace transparency and accountability.

Supporting Communities

Responsibly operated mines are powerful forces for good. SMO mines actively support local communities through education, healthcare improvements, infrastructure development, and fair employment. When you choose SMO Gold, you’re choosing gold that helps build opportunity where it’s needed most.

Environmental Stewardship

SMO mines are committed to environmentally responsible practices, including eliminating mercury use, reducing their ecological impact, and implementing long-term rehabilitation plans. You can be confident that your gold is sourced with deep respect for the natural world.

No Conflict, No Compromise

Fully traceable gold eliminates guesswork. You can be certain your gold has no ties to conflict, exploitation, or harmful mining. Every ring or bespoke piece made with SMO Gold carries purity not just in its metal, but in its ethics.

SMO Gold Hallmark

Track Your SMO Gold

Where is your gold came from..?

Most of you may not know where the gold in your jewellery comes from. We aim to be more thoughtful of the materials by using Single Mine Origin Gold – SMO states the exact Gold Origin and Gold Mine information. Your Wedding Ring or Engagement Ring created with a Mined Origin Gold will always have an SMO Gold mark along with the traditional British Assay Hallmarks. The SMO mark applied by the British Assay Offices is an assurance that the gold has been produced by the legitimate SMO standard of mining operation.

Each piece of Autumn and May Wedding Rings and Engagement Rings made of SMO gold comes with a traceable QR code supplement card. Scan the QR Code with your smartphone and get to know the information and origins of the gold used in your jewellery. This allows you to truly explore the gold’s provenance and the impact of each transaction has helped to create local community efforts.

Track Your SMO Gold
SMO Gold Wedding and Engagement Rings

Experience SMO Gold at Autumn and May

At Autumn and May, we believe that the most beautiful jewellery is also the most mindful. That’s why we are proud to be part of the SMO Gold movement, offering you jewellery that is beautifully crafted, fully traceable, and rich with purpose.

The Perfect Choice for Wedding Rings

Wedding rings symbolize commitment, unity, and shared values. Choosing SMO Gold means your rings reflect not only your love but also your commitment to a better world. You’re wearing gold that supports communities, protects the environment, and has a clear, verifiable story.

Bespoke Jewellery with Deeper Meaning

When you commission a bespoke piece, you’re marking a special moment in your life. Using SMO Gold adds an extra layer of meaning, connecting your personal story to a global story of positive change.

A Golden Standard for the Future

As a family business, we were inspired by the innovative vision of SMO Gold when it first launched in 2017. It represents the next chapter in ethical luxury, and we are thrilled to offer it to you. When you choose SMO Gold at Autumn and May, you're not just buying jewellery; you're investing in a piece that carries beauty, meaning, and a story you can be proud to wear forever.