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Round|Lab Grown|IGI

1.51ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG792697758

Shape and cutting style on the report: Round brilliant

Certificate IGI LG792697758

Diamond specifications and retailer prices

From £142 GBP
As of November 5, 2026
Save £679 GBP (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: £821 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 1.51ct lab-grown round diamond

This 1.51ct lab-grown round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG792697758 or 792697758. Listed at 19 retailers as of November 5, 2026, with prices from £142 to £821, a £679 spread on the same certified stone. MOH London lists it at £821. 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

1.51
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG792697758
Dimensions7.43 × 7.38 × 4.51 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.43 mm7.38 mm1.51 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG792697758
Side View
Table 56.0%Crown 32°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 60.9%

Caratlytics Score

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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: £821 GBP|Low: £139 GBP|High: £849 GBP|Avg: £380 GBP|-3.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
November 6, 2026
Retailer 6£142 GBP
Retailer 16£158 GBP
Retailer 15£165 GBP
Retailer 11£176 GBP
Retailer 7£177 GBP
Retailer 3£308 GBP
Retailer 8£312 GBP
Retailer 2£316 GBP
Retailer 13£385 GBP
Retailer 14£424 GBP
Retailer 9£467 GBP
Retailer 10£528 GBP
Retailer 12£565 GBP
Retailer 4£574 GBP
Retailer 5£606 GBP
MOH London£821 GBP

34 data points across 16 retailers

19 retailers£142 GBP to £821 GBP

Retailer 1
-
£141 GBP
Price last confirmed 49 days ago
A
Retailer 2
-
£142 GBP
View
A
Retailer 3
-
£158 GBP
View
Final sale: no returns
A
Retailer 4
-
£165 GBP
View
Retailer 5
-
£172 GBP
View
Price last confirmed 48 days ago
A
Retailer 6
-
£176 GBP
View
Retailer 7
-
£177 GBP
View
Price last confirmed 12 days ago
B+
Retailer 8
-
£308 GBP
View
A
Retailer 9
-
£312 GBP
View
A
Retailer 10
-
£316 GBP
View
B+
Retailer 11
-
£385 GBP
View
B+
Retailer 12
-
£424 GBP
View
B+
Retailer 13
-
£467 GBP
View
B+
Retailer 14
-
£528 GBP
View
Retailer 15
-
£562 GBP
View
Price last confirmed 46 days ago
B+
Retailer 16
-
£565 GBP
View
B+
Retailer 17
-
£574 GBP
View
B+
Retailer 18
-
£606 GBP
View
Most Expensive
B
MOH London
LG792697758 · Nov 5
£821 GBP
View
18 more retailers have this diamond
Prices start from £142 GBPSave up to £679 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
1.51ct Round
£142 GBP