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0.31ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG775632456

Shape and cutting style on the report: Round brilliant

Certificate IGI LG775632456

Diamond specifications and retailer prices

From £49 GBP
$66 USD
As of October 29, 2026
Save £405 GBP (89%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £454 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG775632456 or 775632456. Listed at 14 retailers as of October 29, 2026, with prices from £49 to £454, a £405 spread on the same certified stone. MOH London lists it at £454. 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
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG775632456
Dimensions4.33 × 4.35 × 2.72 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
4.33 mm4.35 mm0.31 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG775632456
Side View
Table 56.0%Crown 35.8°Girdle: MediumPavilion 40.8°Culet: NoneDepth 62.8%

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 29
Current: £454 GBP|Low: £48 GBP|High: £461 GBP|Avg: £154 GBP|+1.7%
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 30, 2026
Retailer 13£49 GBP
Retailer 11£57 GBP
Retailer 5£66 GBP
Retailer 6£66 GBP
Retailer 3£86 GBP
Retailer 14£97 GBP
Retailer 7£106 GBP
Retailer 8£128 GBP
Retailer 9£148 GBP
Retailer 2£149 GBP
Retailer 4£184 GBP
Retailer 10£198 GBP
Retailer 12£231 GBP
MOH London£454 GBP

41 data points across 14 retailers

14 retailers£49 GBP to £454 GBP

A
Cheapest Retailer
-
£49 GBP
$66 USD
A
Retailer 2
-
£57 GBP
$77 USD
View
A
Retailer 3
-
£66 GBP
$88 USD
View
A
Retailer 4
-
£66 GBP
$88 USD
View
A
Retailer 5
-
£86 GBP
$115 USD
View
Retailer 6
-
£97 GBP
$130 USD
View
Price last confirmed 12 days ago
A
Retailer 7
-
£106 GBP
View
A
Retailer 8
-
£128 GBP
€163 EUR
View
B+
Retailer 9
-
£148 GBP
View
A
Retailer 10
-
£149 GBP
$200 USD
View
B+
Retailer 11
-
£184 GBP
SGD 334 SGD
View
B+
Retailer 12
-
£198 GBP
$265 USD
View
B+
Retailer 13
-
£231 GBP
$310 USD
View
Most Expensive
B
MOH London
LG775632456 · Oct 29
£454 GBP
View
13 more retailers have this diamond
Prices start from £49 GBPSave up to £405 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
£49 GBP