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0.31ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG704592349

Shape and cutting style on the report: Round brilliant

Certificate IGI LG704592349

Diamond specifications and retailer prices

From £58 GBP
$78 USD
As of October 29, 2026
Save £471 GBP (89%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £529 GBP at MOH London · As of October 26, 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 LG704592349 or 704592349. Listed at 13 retailers as of October 26, 2026, with prices from £58 to £529, a £471 spread on the same certified stone. MOH London lists it at £529. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG704592349
Dimensions4.35 × 4.33 × 2.70 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
4.35 mm4.33 mm0.31 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG704592349
Side View
Table 58.0%Crown 35.5°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 62.2%

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: Oct 29
Current: £529 GBP|Low: £44 GBP|High: £532 GBP|Avg: £165 GBP|+0.5%
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
October 30, 2026
Retailer 13£58 GBP
Retailer 9£65 GBP
Retailer 4£67 GBP
Retailer 10£77 GBP
Retailer 11£77 GBP
Retailer 7£97 GBP
Retailer 2£124 GBP
Retailer 6£155 GBP
Retailer 5£159 GBP
Retailer 3£231 GBP
Retailer 8£241 GBP
Retailer 12£276 GBP
MOH London£529 GBP

43 data points across 13 retailers

13 retailers£58 GBP to £529 GBP

A
Cheapest Retailer
-
£58 GBP
$78 USD
A
Retailer 2
-
£65 GBP
$87 USD
View
Final sale: no returns
A
Retailer 3
-
£67 GBP
$90 USD
View
A
Retailer 4
-
£77 GBP
$103 USD
View
A
Retailer 5
-
£77 GBP
$103 USD
View
Retailer 6
-
£97 GBP
$130 USD
View
Price last confirmed 12 days ago
A
Retailer 7
-
£124 GBP
View
B+
Retailer 8
-
£155 GBP
€198 EUR
View
B+
Retailer 9
-
£159 GBP
$213 USD
View
B+
Retailer 10
-
£231 GBP
$310 USD
View
B
Retailer 11
-
£241 GBP
$323 USD
View
B
Retailer 12
-
£276 GBP
$370 USD
View
Most Expensive
B
MOH London
LG704592349 · Oct 26
£529 GBP
View
12 more retailers have this diamond
Prices start from £58 GBPSave up to £471 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
£58 GBP