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Round|Lab Grown|IGI

1.40ct H SI1 Round Lab Grown Diamond

EX • H/SI1 • IGI LG485162769

Shape and cutting style on the report: Round brilliant

Certificate IGI LG485162769

Diamond specifications and retailer prices

From £580 GBP
As of November 5, 2026
Save £2,089 GBP (78%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,668 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.4ct lab-grown round diamond

This 1.4ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG485162769 or 485162769. Listed at 12 retailers as of November 5, 2026, with prices from £580 to £2,668, a £2,089 spread on the same certified stone. MOH London lists it at £2,668. 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

1.40
Carat
H
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG485162769
Dimensions7.15 × 7.10 × 4.42 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.15 mm7.10 mm1.40 ctH / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG485162769
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 62.1%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: £2,668 GBP|Low: £580 GBP|High: £2,711 GBP|Avg: £1,378 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 2£580 GBP
Retailer 6£680 GBP
Retailer 9£762 GBP
Retailer 7£789 GBP
Retailer 3£813 GBP
Retailer 10£918 GBP
Retailer 12£1,164 GBP
Retailer 8£1,265 GBP
Retailer 5£1,755 GBP
Retailer 4£2,259 GBP
Retailer 11£2,357 GBP
MOH London£2,668 GBP

16 data points across 12 retailers

12 retailers£580 GBP to £2,668 GBP

A
Cheapest Retailer
-
£580 GBP
A
Retailer 2
-
£680 GBP
View
B+
Retailer 3
-
£740 GBP
View
B+
Retailer 4
-
£762 GBP
View
Final sale: no returns
Retailer 5
-
£789 GBP
View
Price last confirmed 25 days ago
B+
Retailer 6
-
£789 GBP
View
B+
Retailer 7
-
£918 GBP
View
B
Retailer 8
-
£1,265 GBP
View
B
Retailer 9
-
£1,755 GBP
View
B
Retailer 10
-
£2,218 GBP
View
B
Retailer 11
-
£2,357 GBP
View
Most Expensive
B
MOH London
LG485162769 · Nov 5
£2,668 GBP
View
11 more retailers have this diamond
Prices start from £580 GBPSave up to £2,089 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
1.40ct Round
£580 GBP