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Why buy from Dileti:
- IGI certified stones with complete transparency
- Free insured EU delivery with no customs duties
- 14-day returns with free return shipping
- 60–70% lower pricing than natural diamonds
- Solitaire settings: feature specialized V-prongs capping both pointed tips to prevent chipping. Six-prong configurations maintain security along side curves. Solitaire engagement rings showcase marquise drama cleanly.
- Halo settings: encircle boat-shaped perimeters with pave diamonds, enhancing visual scale whilst protecting delicate tips. Halo engagement rings maximize finger presence.
- Three-stone settings: flank marquise centres with round, pear, or trilliant side diamonds. Three stone engagement rings balance dramatic centres smoothly.
- French pavé settings: pair delicate band sparkle with elongated marquise silhouettes. French pave engagement rings add continuous sparkle.
Metal choices include 18-karat white gold, yellow gold, and rose gold. All Dileti settings include free resizing within 14 days.
| Shape | Price vs Marquise | Surface Area | Best For |
|---|---|---|---|
| Marquise | Baseline | Largest per carat | Maximum finger coverage & drama |
| Oval | Similar | 10–15% larger than round | Soft elongated brilliance |
| Pear | Similar | 8–12% larger than round | Asymmetric teardrop elegance |
| Round | 15–25% higher | Standard | Maximum traditional brilliance |
Frequently Asked Questions
Lab-grown marquise diamonds cost significantly less than mined diamonds of the same quality, so the same budget goes further, toward a larger or higher-grade stone. They are best chosen to wear and enjoy rather than as an investment, since fine jewellery is rarely bought to resell. Dileti sets each lab-grown marquise diamond in 18K gold in Antwerp, and final pricing depends on the stone's 4Cs.
Marquise diamonds work well in solitaire, halo, pavé, and three-stone settings. Both pointed ends need protective prongs, often V-prongs, while the dramatic elongated shape stays on display. Dileti mounts each lab-grown marquise diamond in 18K white, yellow, or rose gold, crafted in Antwerp.
Yes, lab-grown marquise diamonds share the same 10 Mohs hardness as mined diamonds, so they suit daily wear. The two pointed ends are the vulnerable points, so secure prongs there matter more than the diamond's origin. Dileti dispatches each ring within 5 to 7 business days via FedEx, with 14-day store-credit returns.
The bow-tie effect is a dark shadow across the centre of some marquise diamonds, caused by light leaking through the stone. A well-cut marquise keeps it faint, while a poorly cut one shows it clearly, so it is worth checking before you buy. Dileti grades its lab-grown marquise diamonds on the standard 4Cs.
Yes, lab-grown marquise diamonds are genuine diamonds with the same chemical, physical, and optical properties as mined diamonds, and gem laboratories grade them on the same 4Cs. The only difference is origin: they are grown in a laboratory instead of mined. Dileti sets each lab-grown marquise diamond in 18K white, yellow, or rose gold in Antwerp.
The classic length-to-width ratio for a marquise diamond is 1.85 to 2.10, and around 2.00 is the most popular choice. A lower ratio looks wider and shorter, a higher ratio looks longer and narrower, so the final choice comes down to taste. Dileti grades its lab-grown marquise diamonds on the standard 4Cs.
Lab-grown marquise diamonds of 1 carat and above are IGI-certified at Dileti, while stones under 1 carat are not certified. The IGI report documents the diamond's cut, colour, clarity, and carat weight against recognised grading standards, so you can check the exact grades before you buy.
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