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Round|Lab Grown|IGI

2.51ct I SI2 Round Lab Grown Diamond

ID • I/SI2 • IGI LG496134893

Shape and cutting style on the report: Round brilliant

Certificate IGI LG496134893

Diamond specifications and retailer prices

From £1,033 GBP
As of November 5, 2026
Save £5,466 GBP (84%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £6,499 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 2.51ct lab-grown round diamond

This 2.51ct lab-grown round sits in the two to three carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG496134893 or 496134893. Listed at 10 retailers as of November 5, 2026, with prices from £1,033 to £6,499, a £5,466 spread on the same certified stone. MOH London lists it at £6,499. 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

2.51
Carat
I
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.2°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG496134893
Dimensions8.78 × 8.81 × 5.26 mm
L/W Ratio1.00
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
8.78 mm8.81 mm2.51 ctI / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG496134893
Side View
Table 59.0%Crown 34.2°GirdlePavilion 40.2°Culet: NoneDepth 59.8%

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: Nov 5
Current: £6,499 GBP|Low: £1,033 GBP|High: £6,603 GBP|Avg: £3,749 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 2£1,033 GBP
Retailer 4£2,216 GBP
Retailer 6£2,482 GBP
Retailer 7£3,101 GBP
Retailer 3£3,693 GBP
Retailer 5£3,995 GBP
Retailer 8£5,754 GBP
MOH London£6,499 GBP

15 data points across 8 retailers

10 retailers£1,033 GBP to £6,499 GBP

A
Cheapest Retailer
-
£1,033 GBP
B+
Retailer 2
-
£2,216 GBP
View
B+
Retailer 3
-
£2,411 GBP
View
B+
Retailer 4
-
£2,482 GBP
View
Final sale: no returns
B+
Retailer 5
-
£2,571 GBP
View
Retailer 6
-
£2,571 GBP
View
Price last confirmed 25 days ago
B
Retailer 7
-
£3,213 GBP
View
B
Retailer 8
-
£3,693 GBP
View
B
Retailer 9
-
£3,995 GBP
View
Most Expensive
B
MOH London
LG496134893 · Nov 5
£6,499 GBP
View
9 more retailers have this diamond
Prices start from £1,033 GBPSave up to £5,466 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
2.51ct Round
£1,033 GBP