Free Insured UK Delivery                        Complimentary Ring Resizing                        30-Day Returns                        Lifetime Warranty            
Free Insured UK Delivery                        Complimentary Ring Resizing                        30-Day Returns                        Lifetime Warranty            
Your bag is currently empty.

Need some inspiration? Check our inspiration gallery to see the latest trending pieces in our collection.

Get inspired
Order summary

Subtotal (inc. VAT) £0.00

Shipping Free UK Shipping

Continue to checkout Continue to checkout

Enjoy 10% off your first order with code 'HELLOKEANIS'.

Keanis ring resizing icon showing a ring with double-headed arrows indicating size adjustment service

Complimentary ring resizing

Keanis free returns icon showing the number 30 with a circular arrow, representing a 30-day return policy

Free 30 day returns

Keanis delivery icon featuring a line-drawn truck representing shipping and order delivery services

Free & insured UK delivery

Popular terms

See what’s trending

shop bestsellers

Sustainability Rated Lab Diamond Engagement Ring

Explore our curated collection of Sustainability-rated Lab Diamond Engagement Rings, each meticulously crafted to honour your love—and the planet. Every diamond comes with its own dedicated SCS-007 certificate, reassuring you of its traceable origin, ethical stewardship, and minimal environmental impact. With an outstanding sustainability rating backed by rigorous independent assessments, our diamonds represent a future you can feel good about.

No products found

Frequently asked questions

Explore more faqs

  • The SCS-007 Standard for Sustainability Rated Diamonds is the world's first comprehensive benchmark for social and environmental responsibility in the diamond industry. It sets rigorous criteria for origin traceability, climate neutrality, ethical stewardship, and sustainability investments.

    You can learn more directly from the SCS-007 website.

  • Each Sustainability Rated diamond includes a digital Certificate of Sustainability from SCS Global Services. The certificate number is printed on the IGI grading report and can be entered at sustainabilityrateddiamonds.com to download and verify your certificate online.

  • Only authorised retailers — like Keanis — are permitted to offer SCS-007 certified Sustainability Rated Diamonds. This ensures that every diamond meets the highest standards of ethical sourcing, full origin traceability, climate responsibility, and positive social impact.

    We’re proud to be one of the very few jewellery houses accredited to sell these exceptional diamonds, and part of a global movement towards greater transparency and sustainability in fine jewellery.

  • Sustainability Rated diamonds may carry a modest premium due to the strict auditing, full traceability, and environmental safeguards required to meet SCS-007 standards. However, you’re not just paying for a diamond, but investing in transparency, responsibility, and positive global impact.

  • Yes — most of our engagement ring styles can be crafted with a Sustainability Rated lab-grown diamond. While availability can be limited, we’ll do our best to help you find the perfect match. Just get in touch, and we’ll guide you through your options.

Receive 10% off your first order when you subscribe to the world of KEANIS.

Thanks for signing up, you'll hear from us soon!