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Marquise|Lab Grown|IGI

0.31ct E IF Marquise Lab Grown Diamond

VG • E/IF • IGI LG717511523

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG717511523

Diamond specifications and retailer prices

From £85 GBP
$113 USD
As of October 27, 2026
Save £795 GBP (90%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £880 GBP at MOH London · As of October 26, 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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG717511523 or 717511523. Listed at 16 retailers as of October 26, 2026, with prices from £85 to £880, a £795 spread on the same certified stone. MOH London lists it at £880. 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
E
Colour
IF
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle36.7°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG717511523
Dimensions6.73 × 3.45 × 2.33 mm
L/W Ratio1.95
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.73 mm3.45 mm0.31 ctE / IF
OriginLab Grown
CutVery Good
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG717511523
Side View
Table 56.0%Crown 36.7°Girdle: THK-VTKPavilion 40.8°Culet: NoneDepth 67.5%

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: Oct 27
Current: £880 GBP|Low: £82 GBP|High: £890 GBP|Avg: £255 GBP|-1.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 29, 2026
Retailer 10£85 GBP
Retailer 14£95 GBP
Retailer 13£98 GBP
Retailer 12£112 GBP
Retailer 5£149 GBP
Retailer 9£165 GBP
Retailer 8£188 GBP
Retailer 4£196 GBP
Retailer 2£212 GBP
Retailer 11£218 GBP
Retailer 7£270 GBP
Retailer 6£295 GBP
Retailer 3£549 GBP
MOH London£880 GBP

43 data points across 14 retailers

16 retailers£85 GBP to £880 GBP

A
Cheapest Retailer
-
£85 GBP
$113 USD
A
Retailer 2
-
£95 GBP
$127 USD
View
Final sale: no returns
A
Retailer 3
-
£98 GBP
$131 USD
View
A
Retailer 4
-
£112 GBP
$149 USD
View
A
Retailer 5
-
£125 GBP
HK$1,300 HKD
View
A
Retailer 6
-
£149 GBP
$198 USD
View
A
Retailer 7
-
£165 GBP
$220 USD
View
B+
Retailer 8
-
£188 GBP
€239 EUR
View
B+
Retailer 9
-
£196 GBP
$260 USD
View
B+
Retailer 10
-
£212 GBP
View
B+
Retailer 11
-
£218 GBP
$290 USD
View
B+
Retailer 12
-
£270 GBP
View
B
Retailer 13
-
£295 GBP
SGD 530 SGD
View
B
Retailer 14
-
£382 GBP
$508 USD
View
B
Retailer 15
-
£549 GBP
View
Most Expensive
B
MOH London
LG717511523 · Oct 26
£880 GBP
View
15 more retailers have this diamond
Prices start from £85 GBPSave up to £795 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
£85 GBP