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Round|Lab Grown|IGI

1.51ct G SI1 Round Lab Grown Diamond

VG • G/SI1 • IGI LG844634675

Shape and cutting style on the report: Round brilliant

Certificate IGI LG844634675

Diamond specifications and retailer prices

From £290 GBP
$388 USD
As of November 1, 2026
Save £472 GBP (62%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £762 GBP at MOH London · As of November 1, 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG844634675 or 844634675. Listed at 6 retailers as of November 1, 2026, with prices from £290 to £762, a £472 spread on the same certified stone. MOH London lists it at £762. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844634675
Dimensions7.22 × 7.31 × 4.52 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.22 mm7.31 mm1.51 ctG / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG844634675
Side View
Table 57.0%Crown 34.1°Girdle: STK-THKPavilion 40.2°Culet: NoneDepth 62.2%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: £762 GBP|Low: £277 GBP|High: £767 GBP|Avg: £445 GBP|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 4£290 GBP
Retailer 2£292 GBP
Retailer 3£334 GBP
Retailer 5£413 GBP
Retailer 6£565 GBP
MOH London£762 GBP

15 data points across 6 retailers

6 retailers£290 GBP to £762 GBP

B+
Cheapest Retailer
-
£290 GBP
$388 USD
A
Retailer 2
-
£292 GBP
View
B+
Retailer 3
-
£334 GBP
$447 USD
View
B+
Retailer 4
-
£413 GBP
$553 USD
View
B
Retailer 5
-
£565 GBP
$757 USD
View
Most Expensive
B
MOH London
LG844634675 · Nov 1
£762 GBP
View
5 more retailers have this diamond
Prices start from £290 GBPSave up to £472 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
£290 GBP