Approx. 1.30ct total · Princess
D–F colour · VS1+ clarity
Made to order — dispatched in around four weeks, hallmarked where required
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Lab-grown diamond quality
D–F colour · VS1 clarity or better
Every lab-grown diamond is D–F colour and VS1 clarity or better. Round brilliant lab-grown diamonds can receive a formal cut grade; fancy shapes are assessed through their proportions, polish, symmetry and overall make. Any piece whose centre stone, on its own, weighs 1.00ct or more includes an individual IGI grading report as standard. Total carat weight does not count towards this.
Some stories are shaped by two people meeting in the middle. Catherine turns that thought into a crossover ring, bringing two equal princess-cut lab-grown diamonds together without making either one secondary. Their square outlines give the meeting a confident, precise edge.
Each princess lab-grown diamond measures 4.90 × 4.90mm and weighs 0.65ct, creating an even 1.30ct pairing. The crossover shank brings the two stones together. This is the defining idea of Catherine: two matching stones, two paths and one composed design.
Catherine gives both stones equal importance, making it a meaningful choice for a partnership of equals. Two 0.65ct princess lab-grown diamonds create 1.30ct in total, their matching 4.90 × 4.90mm proportions joined by the crossover shank. Choose 14kt for the harder, more scratch-resistant gold, or 18kt for more pure gold and a heavier feel. White, Yellow and Rose Gold let you choose the setting's character.
This ring is made to order in your size. Choose your UK ring size when you order — there is no extra charge for any size. If you are unsure of your size, our ring sizer makes it easy at home — and your £5 comes straight back to you as a gift card. Standard UK sizes are available — if you need guidance, contact us before placing your order.
Every piece is crafted to your chosen metal and size. Our usual timeline is around four weeks from order to dispatch, which includes UK hallmarking where required. More complex pieces may take slightly longer. We confirm the expected timeframe in writing before production begins.
Catherine's crossover shape and paired square stones give it enough visual structure to wear alone. If you add a band, keep it simple so the meeting of the two stones remains the focus. The matching stones make the design feel balanced from either side of the hand.
Are Catherine's two lab-grown diamonds the same size?
Yes. Both princess lab-grown diamonds measure 4.90 × 4.90mm and weigh 0.65ct each. Together they give the ring a total lab-grown diamond weight of approximately 1.30ct.
What makes Catherine a toi et moi design?
Its crossover shank brings two princess lab-grown diamonds together as equal focal stones. Toi et moi means you and me, which suits the design's balanced pairing.
What quality are Catherine's lab-grown diamonds?
Every lab-grown diamond we set is D to F colour and VS1 clarity or better. Catherine is made to order in around four weeks and comes with a 12-month guarantee.
Store separately in the pouch or box provided. Avoid contact with harsh chemicals, perfume, and chlorine. Clean gently with a soft cloth or mild soap solution. Remove before swimming, exercising, or sleeping. See our Materials & Care guide for full instructions.
Unsure on size, metal, or lab-grown diamond specification? Email us and we'll guide you to the right option before you order — we reply personally, within two working days.
All pieces are made to order. Sterling silver and gold pieces dispatch in around four weeks, which includes UK hallmarking where required. Every order is tracked and signed for, and UK delivery is free. See how your piece is made, plus our Shipping & Delivery and Returns & Refunds pages for full details.
