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0.31ct H SI2 Round Lab Grown Diamond

EX • H/SI2 • IGI LG544242974

Shape and cutting style on the report: Round brilliant

Certificate IGI LG544242974

Diamond specifications and retailer prices

From £65 GBP
$87 USD
As of October 29, 2026
Save £530 GBP (89%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £595 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.31ct lab-grown round diamond

This 0.31ct lab-grown round sits in the sub-half-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG544242974 or 544242974. Listed at 10 retailers as of October 29, 2026, with prices from £65 to £595, a £530 spread on the same certified stone. MOH London lists it at £595. 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

0.31
Carat
H
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.3°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG544242974
Dimensions4.43 × 4.45 × 2.60 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
4.43 mm4.45 mm0.31 ctH / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG544242974
Side View
Table 59.0%Crown 31.3°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 58.6%

Caratlytics Score

How it works →
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: £595 GBP|Low: £62 GBP|High: £599 GBP|Avg: £253 GBP|+0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 29, 2026
Retailer 2£65 GBP
Retailer 5£86 GBP
Retailer 6£150 GBP
Retailer 3£171 GBP
Retailer 7£202 GBP
Retailer 4£249 GBP
Retailer 8£431 GBP
MOH London£595 GBP

12 data points across 8 retailers

10 retailers£65 GBP to £595 GBP

A
Cheapest Retailer
-
£65 GBP
$87 USD
A
Retailer 2
-
£75 GBP
$100 USD
View
A
Retailer 3
-
£86 GBP
$114 USD
View
A
Retailer 4
-
£86 GBP
$114 USD
View
B+
Retailer 5
-
£150 GBP
$200 USD
View
B+
Retailer 6
-
£171 GBP
$228 USD
View
B+
Retailer 7
-
£202 GBP
HK$2,100 HKD
View
B+
Retailer 8
-
£249 GBP
$332 USD
View
B
Retailer 9
-
£259 GBP
$345 USD
View
Most Expensive
B
MOH London
LG544242974 · Oct 29
£595 GBP
View
9 more retailers have this diamond
Prices start from £65 GBPSave up to £530 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
0.31ct Round
£65 GBP