Approx. 3.77ct total · Cushion and round
D–F colour · VS1+ clarity
Made to order — dispatched in around four weeks, hallmarked where required
✓ Secure checkout
✓ 14-day returns on standard pieces, and faulty pieces always covered · Returns & Refunds
✓ Read our reviews on Trustpilot
✓ Questions? info@thelabjewellers.com or tap WhatsApp
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.
There are moments when the centre should feel unmistakably generous. Lumina answers with a 3.00ct cushion cut lab-grown diamond, then surrounds its softened rectangle with twenty-two round lab-grown diamonds. The halo follows and amplifies the centre rather than distracting from it.
The cushion measures 9.20 x 7.42mm in a collet setting. Around it, twenty-two 2.00mm stones form a U-cut halo, bringing the twenty-three lab-grown diamonds to approximately 3.77ct in total. At approximately 24.5 x 12.4mm including the bail, Lumina combines a large central cut with a clearly defined border and a bail suited to chains up to 3.6mm thick.
Lumina puts a full 3.00ct cushion cut lab-grown diamond at its centre, then uses twenty-two round lab-grown diamonds to broaden and define it. Approximately 3.77ct in total gives this pendant true occasion presence, while the halo preserves the cushion's distinctive softened corners. Choose 14kt for the harder, more scratch-resistant gold, or 18kt for more pure gold and a heavier feel. Three gold colours let you choose the frame around that commanding centre.
Sold as a pendant on its own, ready for a chain of your choosing. The bail takes any standard fine chain, so it will sit on one you already own. We are not offering gold chains at the moment while we settle on a supplier we are happy with — email us if you would like to know when they are available.
Every piece is crafted to order in your chosen metal. 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.
Wear Lumina where it has room, at the centre of an open neckline or over a simple block of colour. The pendant measures approximately 24.5 x 12.4mm including the bail, so it needs no second pendant beside it. Choose a chain up to 3.6mm thick at the length that suits your clothing.
How large is Lumina's centre lab-grown diamond?
The cushion cut lab-grown diamond weighs 3.00ct and measures 9.20 x 7.42mm. It sits in a collet setting, surrounded by twenty-two 2.00mm round lab-grown diamonds that form the U-cut halo.
What is the total weight and size of Lumina?
Lumina contains twenty-three lab-grown diamonds weighing approximately 3.77ct in total. The complete pendant measures approximately 24.5 x 12.4mm including the bail, combining its cushion centre, round halo and chain fitting.
What chain can I use with Lumina?
Lumina is sold as a pendant without a chain. Its bail fits a chain up to 3.6mm thick, giving you the choice of a compatible chain you already own and the length that best suits your neckline.
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.
