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An 11 carat diamond ring is a true masterpiece of elegance and scale — the kind of extraordinary gem that instantly becomes a talking point. This size represents a profound commitment, a celebration of success, or a deeply personal milestone. The 11 Carat Diamond Ring Price for a top-tier lab-grown diamond — colourless (D–F), VS–VVS clarity, excellent cut, set in solid 14KT gold with IGI certification — typically ranges from $16,500–$18,500 USD or £13,530–£15,170 GBP.
This guide will walk you through everything you need to know before investing in an 11 carat lab-grown diamond ring. You’ll discover its actual dimensions, pricing factors, comparisons with surrounding carat sizes, and the best shapes, settings, and buying strategies. Whether you’re drawn to a dramatic round brilliant or a refined emerald cut, these insights will help you select a ring that holds both personal meaning and breathtaking beauty.
How Big is an 11ct Lab Diamond? (Measurements Explained)
When people ask, “How big is an 11 Carat diamond?”, it’s important to remember that carat measures weight, not visible size. One carat equals 200 milligrams, making an 11 carat diamond weigh 2.2 grams. The diamond’s face-up appearance depends heavily on the cut style and shape proportions.
A round brilliant cut 11 carat lab diamond typically measures around 14.4–14.7 mm in diameter. Shapes like oval or pear tend to look larger for the same carat due to their elongated faces, while cushion or Asscher cuts may appear slightly smaller since more of the carat weight sits deeper in the stone.
| Carat Weight | Approx. Diameter (Round Brilliant, mm) |
|---|---|
| 1 ct | 6.4 mm |
| 2 ct | 8.2 mm |
| 3 ct | 9.3 mm |
| 4 ct | 10.2 mm |
| 5 ct | 11.2 mm |
| 6 ct | 11.8–12.0 mm |
| 7 ct | 12.4–12.7 mm |
| 8 ct | 13.0–13.2 mm |
| 9 ct | 13.5–13.7 mm |
| 10 ct | 14.0–14.2 mm |
| 11 ct | 14.4–14.7 mm |
Double the weight doesn’t double the visual size — for example, a 2 ct diamond looks roughly 50% larger than a 1 ct, not twice as big. By 11 carats, proper cutting ensures the stone maintains a harmonious look on the finger while maximising radiance.
How Much is an 11 Carat Diamond Ring Price and Worth?
For a lab-grown diamond of this quality and size, the 11 Carat Diamond Ring Price is typically $16,500–$18,500 USD or £13,530–£15,170 GBP.
The value is determined by the 4Cs:
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Cut: The most crucial aspect for brilliance; opt for Excellent or Ideal.
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Colour: D–F grades provide perfect whiteness.
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Clarity: VS–VVS clarity gives near-flawless transparency.
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Carat: Large size commands rarity premiums.
Lab-grown diamonds deliver the same beauty and physical properties as mined stones, at 40–60% lower cost, with guaranteed IGI certification and ethical origins. They’re also more readily available for higher carat weights, giving you choice and value.
Find out more: Lab Grown Diamonds
10 Carat vs 11 Carat vs 12 Carat Lab Grown Diamonds Price Comparison
Comparing nearby carats can help balance cost and desired visual presence.
| Carat Weight | Avg. Size (mm) | Price Range (USD) | Other Popular Shapes | Lifestyle Fit |
|---|---|---|---|---|
| 10 ct | 14.0–14.2 mm | $15,000 – $17,000 | Oval (faces larger), Cushion (soft glow), Princess (square brilliance) | Bold yet wearable |
| 11 ct | 14.4–14.7 mm | $16,500 – $18,500 | Round (classic sparkle), Oval (elongated), Emerald (sleek elegance) | Confident luxury |
| 12 ct | 14.8–15.0 mm | $18,000 – $20,000 | Pear (elongates finger), Radiant (modern sparkle), Cushion (vintage charm) | Ultimate prestige |
Price increases at higher carats aren’t proportional — rarity premiums accelerate costs quickly. Shapes like oval or pear can amplify apparent size, making a slightly lower carat feel visually larger. Elongated cushion or radiant cuts offer similar optical tricks with distinctive flair. Lifestyle tip: choose 10 ct for budget-conscious boldness, 11 ct for balanced impact, and 12 ct for ultra-luxury presence.
Which Diamond Shapes are Best for 11 Carat Engagement Rings?
The choice of shape determines how your 11 carat diamond expresses its personality. Popular options include:
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Round Brilliant: Timeless design with maximum sparkle.
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Oval: Appears larger while flattering finger shape.
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Princess: Modern square brilliance with sharp symmetry.
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Cushion: Vintage appeal with soft, romantic edges.
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Emerald: Clean sophistication, highlighting flawless clarity.
Rounds are often priced higher due to demand and cutting precision, while fancy shapes can offer bigger visual spread and better value.
Browse options here: Engagement Rings Collection
Best Buying Tips for 11 Carat Lab Diamond Rings
An 11 carat diamond is a significant investment — here’s how to choose wisely:
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Prioritise cut to ensure maximum light performance.
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Opt for D–F colour for the finest whiteness.
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Choose VS–VVS clarity for near-flawless transparency.
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Take advantage of lab-grown pricing — 40–60% savings.
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Match your shape to finger proportions and style goals.
For example, one buyer selected an 11 ct elongated cushion, achieving the size look of a 12 ct round while staying within budget and allowing for a custom pavé band upgrade.
Find the right size here: Find Your Ring Size
Popular Settings for 11 Carat Diamond Rings
The right setting enhances both beauty and perceived size:
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Solitaire: Pure focus on the centre stone’s grandeur.
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Halo: Adds surrounding sparkle, enlarging the appearance.
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Pavé: Band set with diamonds for continuous shimmer.
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Three-Stone: Symbolic design representing past, present, future.
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Minimalist: Clean lines for modern elegance.
Halo or pavé styles can make your diamond appear even larger, while solitaire settings keep the look timeless and balanced.
Image Alt: 11 Carat Diamond Ring in Halo Setting
Custom-Made 11 Carat Lab Diamond Rings
Customising your 11 carat ring allows unlimited creativity and perfect tailoring to your preferences.
We offer loose stone sourcing, detailed CAD design services, and handcrafted settings to bring your concept to life. Custom work lets you manage budget while ensuring a one-of-a-kind piece that speaks to your unique style and love story.
Start designing: Custom Jewelry
Work with us to create a custom 11 Carat diamond ring that tells your story.
FAQs about 11 Carat Diamond Rings
How much does an 11 Carat diamond ring cost?
$16,500–$18,500 USD or £13,530–£15,170 GBP for D–F colour, VS–VVS clarity, excellent cut lab-grown diamonds.
How big is an 11 Carat diamond in mm?
A round 11 ct measures approximately 14.4–14.7 mm.
Is an 11 Carat diamond ring good for engagement?
Yes — it’s a rare, luxurious choice that makes a powerful statement.
Are 11 Carat lab-grown diamonds cheaper?
Yes, they cost 40–60% less than equivalent mined diamonds, with identical beauty and certification.
Which settings make an 11 Carat diamond look bigger?
Halo, oval, and pear designs are excellent for enhancing visual size.
Conclusion
Choosing an 11 carat lab-grown diamond ring means embracing extraordinary scale and impeccable craftsmanship. It’s a size that stands out in every room, while lab-grown options ensure the best value, ethical sourcing, and guaranteed quality.
At Gilibili, we make it easy to find or design a ring that’s tailored to your vision. Explore our 11 Carat Diamond Rings to find the perfect match for your style and story.
Shop Now → https://gilibili.com/pages/engagement-rings
Contact us via WhatsApp at +91 8200212331 - click to chat for (instant reply) or email hello@gilibili.com (reply within 2 days) for personalised quotes and guidance. Whether you’re investing in a loose diamond, commissioning a custom piece, or finding your dream engagement ring — we’ll make it unforgettable.