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Round|Lab Grown|IGI

1.80ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG571300298

Shape and cutting style on the report: Round brilliant

Certificate IGI LG571300298

Diamond specifications and retailer prices

From £272 GBP
$365 USD
As of November 1, 2026
Save £557 GBP (67%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £829 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.8ct lab-grown round diamond

This 1.8ct lab-grown round sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG571300298 or 571300298. Listed at 11 retailers as of November 1, 2026, with prices from £272 to £829, a £557 spread on the same certified stone. MOH London lists it at £829. 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

1.80
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG571300298
Dimensions7.91 × 7.85 × 4.75 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
7.91 mm7.85 mm1.80 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG571300298
Side View
Table 58.0%Crown 33.5°Girdle: MediumPavilion 40.6°Culet: NoneDepth 60.2%

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 1
Current: £829 GBP|Low: £137 GBP|High: £860 GBP|Avg: £450 GBP|-2.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 8£192 GBP
Retailer 9£212 GBP
Retailer 7£272 GBP
Retailer 2£385 GBP
Retailer 5£405 GBP
Retailer 6£432 GBP
Retailer 4£668 GBP
Retailer 3£683 GBP
MOH London£829 GBP

38 data points across 9 retailers

11 retailers£272 GBP to £829 GBP

Retailer 1
-
£171 GBP
$229 USD
Price last confirmed 34 days ago
Retailer 2
-
£199 GBP
$266 USD
View
Price last confirmed 41 days ago
Retailer 3
-
£209 GBP
$280 USD
View
Price last confirmed 34 days ago
B+
Retailer 4
-
£272 GBP
$365 USD
View
A
Retailer 5
-
£385 GBP
View
A
Retailer 6
-
£405 GBP
$542 USD
View
A
Retailer 7
-
£432 GBP
$579 USD
View
B
Retailer 8
-
£668 GBP
$895 USD
View
Retailer 9
-
£681 GBP
$913 USD
View
Price last confirmed 32 days ago
B+
Retailer 10
-
£683 GBP
$915 USD
View
Most Expensive
B
MOH London
LG571300298 · Nov 1
£829 GBP
View
10 more retailers have this diamond
Prices start from £272 GBPSave up to £557 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
1.80ct Round
£272 GBP