Not sure which size to choose? Choosing the right size is easy. Use the guide below, or contact our team for personalised advice before ordering. We’re happy to help you find the perfect fit.
| UK Size | Approx. US Size | Inside Diameter |
|---|---|---|
| J | 4¾ | 15.5mm |
| L | 5¾ | 16.3mm |
| N | 6¾ | 17.1mm |
| P | 7¾ | 17.9mm |
| R | 8¾ | 18.8mm |
Between sizes? We generally recommend choosing the larger size for the most comfortable fit.
Still unsure? Contact us before placing your order and we’ll happily recommend the best size based on a ring you already own.
THE SMARTER DIAMOND ALTERNATIVE
Same size. Same sparkle. More brilliance and fire.
Traditional Diamond Ring
£3,000+
Traditional diamond pricing
1-3 Carat Moissanite Round Cut Ring
£79.99
Luxury appearance without the luxury markup
Modern Luxury Without Compromise
At ShelbyCo, we believe fine jewellery should feel timeless, ethical, and attainable.
Our moissanite pieces are crafted for women who value brilliance, craftsmanship, and individuality — without paying traditional diamond markups.
Learn why more and more people are choosing Moissanite over traditional stones here:
Yellow gold brings a warmth that white metals
can't match. The tone softens the brilliance of
the moissanite, creating a vintage contrast that
doesn’t feel dated. Available in one, two, or three
carats, each size delivers the same depth and fire
that makes moissanite irresistible. Sterling silver
holds it in place, letting the stone dominate
without competition. It carries weight both literal
and visual. The gold announces itself before the
stone even catches light. Bold in a way that feels
earned rather than loud.
Hand-finished luxury materials designed for everyday brilliance.
Conflict-free moissanite created with a lower environmental impact.
Each stone is selected for exceptional fire, clarity and brilliance.
