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Round|Lab Grown|IGI

1.14ct I SI1 Round Lab Grown Diamond

ID • I/SI1 • IGI LG400943059

Shape and cutting style on the report: Round brilliant

Certificate IGI LG400943059

Diamond specifications and retailer prices

From £273 GBP
$366 USD
As of November 1, 2026
Save £512 GBP (65%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £785 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.14ct lab-grown round diamond

This 1.14ct lab-grown round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG400943059 or 400943059. Listed at 5 retailers as of November 1, 2026, with prices from £273 to £785, a £512 spread on the same certified stone. MOH London lists it at £785. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.14
Carat
I
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.8°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG400943059
Dimensions6.70 × 6.68 × 4.09 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory grown diamond was created by chemical vapor deposition process (CVD) Type IIa
Top View
6.70 mm6.68 mm1.14 ctI / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG400943059
Side View
Table 58.0%Crown 34.8°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 61.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: £785 GBP|Low: £254 GBP|High: £794 GBP|Avg: £419 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 1, 2026
Retailer 3£273 GBP
Retailer 2£313 GBP
Retailer 5£331 GBP
Retailer 4£393 GBP
MOH London£785 GBP

11 data points across 5 retailers

5 retailers£273 GBP to £785 GBP

A
Cheapest Retailer
-
£273 GBP
$366 USD
Retailer 2
-
£313 GBP
$420 USD
View
Price last confirmed 13 days ago
A
Retailer 3
-
£331 GBP
$443 USD
View
A
Retailer 4
-
£393 GBP
$526 USD
View
Most Expensive
A
MOH London
LG400943059 · Nov 1
£785 GBP
View
4 more retailers have this diamond
Prices start from £273 GBPSave up to £512 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.14ct Round
£273 GBP