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Round|Lab Grown|IGI

2.31ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG499105266

Shape and cutting style on the report: Round brilliant

Certificate IGI LG499105266

Diamond specifications and retailer prices

From £970 GBP
$1,300 USD
As of October 30, 2026
Save £5,706 GBP (85%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £6,677 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 2.31ct lab-grown round diamond

This 2.31ct lab-grown round sits in the two to three carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG499105266 or 499105266. Listed at 11 retailers as of October 29, 2026, with prices from £970 to £6,677, a £5,706 spread on the same certified stone. MOH London lists it at £6,677. 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

2.31
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG499105266
Dimensions8.49 × 8.55 × 5.11 mm
L/W Ratio1.01
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
8.49 mm8.55 mm2.31 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG499105266
Side View
Table 61.0%Crown 32.8°GirdlePavilion 40.6°Culet: NoneDepth 60.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: £6,677 GBP|Low: £970 GBP|High: £9,376 GBP|Avg: £4,021 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 2£970 GBP
Retailer 4£2,258 GBP
Retailer 7£2,529 GBP
Retailer 5£2,620 GBP
Retailer 8£2,739 GBP
Retailer 9£3,151 GBP
Retailer 3£3,688 GBP
Retailer 6£4,071 GBP
MOH London£6,677 GBP
Retailer 10£9,376 GBP

16 data points across 10 retailers

11 retailers£970 GBP to £6,677 GBP

A
Cheapest Retailer
-
£970 GBP
$1,300 USD
B+
Retailer 2
-
£2,258 GBP
$3,026 USD
View
B+
Retailer 3
-
£2,458 GBP
$3,293 USD
View
B+
Retailer 4
-
£2,529 GBP
$3,389 USD
View
Final sale: no returns
B+
Retailer 5
-
£2,620 GBP
$3,510 USD
View
Retailer 6
-
£2,620 GBP
$3,510 USD
View
Price last confirmed 18 days ago
B+
Retailer 7
-
£2,739 GBP
$3,670 USD
View
B
Retailer 8
-
£3,274 GBP
$4,387 USD
View
B
Retailer 9
-
£3,688 GBP
$4,941 USD
View
B
Retailer 10
-
£4,071 GBP
$5,455 USD
View
Most Expensive
B
MOH London
LG499105266 · Oct 29
£6,677 GBP
View
10 more retailers have this diamond
Prices start from £970 GBPSave up to £5,706 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
2.31ct Round
£970 GBP