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Round|Lab Grown|IGI

1.74ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG539219043

Shape and cutting style on the report: Round brilliant

Certificate IGI LG539219043

Diamond specifications and retailer prices

From £306 GBP
$411 USD
As of November 1, 2026
Save £507 GBP (62%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £813 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.74ct lab-grown round diamond

This 1.74ct 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 top-tier cut grade and certified by IGI LG539219043 or 539219043. Listed at 6 retailers as of November 1, 2026, with prices from £306 to £813, a £507 spread on the same certified stone. MOH London lists it at £813. 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

1.74
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG539219043
Dimensions7.64 × 7.67 × 4.76 mm
L/W Ratio1.00
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
7.64 mm7.67 mm1.74 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG539219043
Side View
Table 58.0%Crown 35.9°Girdle: MED-STKPavilion 40.8°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: £813 GBP|Low: £288 GBP|High: £823 GBP|Avg: £465 GBP|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 3, 2026
Retailer 3£306 GBP
Retailer 2£315 GBP
Retailer 4£373 GBP
Retailer 5£427 GBP
Retailer 6£599 GBP
MOH London£813 GBP

40 data points across 6 retailers

6 retailers£306 GBP to £813 GBP

B+
Cheapest Retailer
-
£306 GBP
$411 USD
A
Retailer 2
-
£315 GBP
View
A
Retailer 3
-
£373 GBP
$501 USD
View
A
Retailer 4
-
£427 GBP
$573 USD
View
B+
Retailer 5
-
£599 GBP
$804 USD
View
Most Expensive
B
MOH London
LG539219043 · Nov 2
£813 GBP
View
5 more retailers have this diamond
Prices start from £306 GBPSave up to £507 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
1.74ct Round
£306 GBP