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Round|Lab Grown|IGI

1.51ct E SI2 Round Lab Grown Diamond

ID • E/SI2 • IGI LG778671695

Shape and cutting style on the report: Round brilliant

Certificate IGI LG778671695

Diamond specifications and retailer prices

From £153 GBP
$204 USD
As of October 29, 2026
Save £665 GBP (81%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £818 GBP at MOH London · As of October 26, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG778671695 or 778671695. Listed at 11 retailers as of October 26, 2026, with prices from £153 to £818, a £665 spread on the same certified stone. MOH London lists it at £818. 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
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG778671695
Dimensions7.38 × 7.34 × 4.54 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
7.38 mm7.34 mm1.51 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG778671695
Side View
Table 58.0%Crown 34.9°Girdle: MediumPavilion 41.2°Culet: NoneDepth 61.7%

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: Oct 29
Current: £818 GBP|Low: £141 GBP|High: £856 GBP|Avg: £391 GBP|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 4£153 GBP
Retailer 6£164 GBP
Retailer 3£175 GBP
Retailer 7£306 GBP
Retailer 5£321 GBP
Retailer 2£346 GBP
Retailer 10£369 GBP
Retailer 9£378 GBP
Retailer 11£562 GBP
Retailer 8£563 GBP
MOH London£818 GBP

40 data points across 11 retailers

11 retailers£153 GBP to £818 GBP

A
Cheapest Retailer
-
£153 GBP
$204 USD
A
Retailer 2
-
£164 GBP
$218 USD
View
A
Retailer 3
-
£175 GBP
$233 USD
View
B+
Retailer 4
-
£306 GBP
$408 USD
View
A
Retailer 5
-
£321 GBP
€407 EUR
View
A
Retailer 6
-
£346 GBP
View
B+
Retailer 7
-
£369 GBP
$491 USD
View
A
Retailer 8
-
£378 GBP
$503 USD
View
B
Retailer 9
-
£562 GBP
$748 USD
View
B
Retailer 10
-
£563 GBP
$750 USD
View
Most Expensive
B
MOH London
LG778671695 · Oct 26
£818 GBP
View
10 more retailers have this diamond
Prices start from £153 GBPSave up to £665 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
£153 GBP