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Materials & diamond guidance
- Solid gold & platinum
- 9ct solid gold contains 37.5% pure gold, 14ct contains 58.5% and 18ct contains 75%. The remaining alloy affects colour and strength. PT950 contains 95% platinum.
- Diamond weight
- Carat measures weight, not face-up size. Shape and cut affect how large a diamond looks. The weight option states whether it describes a centre stone, a pair, or the whole piece. Preview proportions vary with cut and fit.
- Clarity
- Clarity describes internal and surface features under magnification. SI, VS and VVS range from slightly included to very slightly and very, very slightly included; the number distinguishes grades within each group. It is not a percentage of clarity.
- Grading reports
- A report documents a particular stone’s carat weight, colour, clarity and cut where graded. A laboratory report is separate from the jewellery’s metal purity. Individual reports are not promised for every small accent stone.
Specifications
Old European Lab Diamond Solitaire Ring
Old European Lab Diamond Solitaire Ring
- Metal
- 9ct white gold
- Centre diamond
- 1.74ct · Old European round
- Diamond size
- 7.59 × 7.63 × 4.76 mm
- Metal weight
- Approx. 2.6 g
- Setting height
- 6.3 mm
Free delivery
Free delivery on every order. Allow 7–10 business days from ordering, including making your piece and shipping from China.
14-day returns
Request a return within 14 days of delivery. For a change of mind, you pay the return postage to our overseas return destination. Contact us for the address and instructions before posting.
Quality checks & diamond reports
Our production partner carries out three quality checks before dispatch, inspecting workmanship, stone setting and finish.
Independent grading reports, including IGI reports, are available for selected centre stones. A separate report is not included for every diamond or small accent stone.
Explore quality checks and grading reports, or ask about your chosen stone.
Free gift packaging
Gift packaging is free and optional. Select Add free gift packaging before adding your piece to the bag.
Lifetime manufacturing warranty
For the original purchaser, our lifetime manufacturing warranty covers defects in materials and workmanship. Normal wear, accidental damage, loss and theft are excluded.
Personal help
Need help with your metal, stone, size or a gift? Tell us what you have in mind and we’ll help you choose.
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About this piece
A single lab-grown diamond sits above a polished band in an open petal setting. The original design features an Old European-cut round centre, giving the solitaire its distinctive character. Alternative centre shapes are available in the product selector.
- Diamond weight: choose a 1.00ct, 2.00ct or 3.00ct centre diamond. This is the weight of the single centre stone; carat measures weight rather than diameter.
- Metal: choose 9ct, 14ct or 18ct solid gold in white, yellow or rose, or PT950 platinum.
- Clarity: SI1, VS1 and VVS1 options are available.
- Shape and fit: select your preferred centre shape and ring size on the product page. Your selection determines the final configuration and price.
Materials & measurements
Size & details
- Metal
- 9ct white gold
- Centre diamond
- 1.74 ct · Old European round lab-grown diamond
- Diamond dimensions
- 7.59 × 7.63 × 4.76 mm
- Metal weight
- Approx. 2.6 g
- Setting height
- 6.3 mm
- Setting width
- 8.5 mm
- Band width
- 1.6 mm
- Band depth
- 1.3 mm
Delivery & returns
- Free delivery · estimated 7–10 business days from ordering, including making and shipping your piece.
- Request an eligible return within 14 days of delivery. Email admin@byiris.store to arrange it. Change-of-mind returns are sent overseas at your cost.
Size guide
Complete the look
Considered pieces to wear alongside it.
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Rose gold Three-Claw Lab Diamond Stud Earrings
View price1ct pair shown · From price for 0.5ct pair
Explore other styles
A different setting. Another silhouette. Find the one that feels like you.
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Yellow gold Marquise & Pear Lab Diamond Trilogy Ring
View price1ct centre shown · 1ct starting price
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Design & craftsmanship
Considered in every detail.
Illustrated studies of our marquise-and-pear trilogy ring, from its silhouette to the setting.
From line to form.
A three-stage pencil illustration exploring the marquise centre, pear side stones and the setting that holds them together.
A closer look at the setting.
An illustrative view of the trilogy ring in a jeweller’s clamp, showing the relationship between the stones, claws and band.