Marquise|Lab Grown|IGI

0.31ct H SI2 Marquise Lab Grown Diamond

VG • H/SI2 • IGI LG539229188

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG539229188

Diamond specifications and retailer prices

From £65 GBP
$87 USD
As of November 2, 2026
Save £527 GBP (89%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £591 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 0.31ct lab-grown marquise diamond

This 0.31ct lab-grown marquise sits in the sub-half-carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI LG539229188 or 539229188. Listed at 11 retailers as of October 29, 2026, with prices from £65 to £591, a £527 spread on the same certified stone. MOH London lists it at £591. 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

0.31
Carat
H
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle30.6°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG539229188
Dimensions7.53 × 3.50 × 2.08 mm
L/W Ratio2.15
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
7.53 mm3.50 mm0.31 ctH / SI2
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG539229188
Side View
Table 63.5%Crown 30.6°Girdle: THN-STKPavilion 40.9°Culet: NoneDepth 59.4%

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: Nov 2
Current: £591 GBP|Low: £62 GBP|High: £595 GBP|Avg: £201 GBP|+0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 5£65 GBP
Retailer 8£75 GBP
Retailer 9£85 GBP
Retailer 10£85 GBP
Retailer 2£127 GBP
Retailer 3£153 GBP
Retailer 7£170 GBP
Retailer 4£206 GBP
Retailer 11£248 GBP
Retailer 6£257 GBP
MOH London£591 GBP

17 data points across 11 retailers

11 retailers£65 GBP to £591 GBP

A
Cheapest Retailer
-
£65 GBP
$87 USD
B+
Retailer 2
-
£75 GBP
$100 USD
View
Retailer 3
-
£85 GBP
$114 USD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
£85 GBP
$114 USD
View
B+
Retailer 5
-
£127 GBP
$170 USD
View
B+
Retailer 6
-
£153 GBP
HK$1,600 HKD
View
B
Retailer 7
-
£170 GBP
$228 USD
View
B
Retailer 8
-
£206 GBP
View
B
Retailer 9
-
£248 GBP
$332 USD
View
B
Retailer 10
-
£257 GBP
$345 USD
View
Most Expensive
C
MOH London
LG539229188 · Oct 29
£591 GBP
View
10 more retailers have this diamond
Prices start from £65 GBPSave up to £527 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 Marquise
£65 GBP