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Round|Lab Grown|IGI

2.50ct I SI2 Round Lab Grown Diamond

EX • I/SI2 • IGI LG500151149

Shape and cutting style on the report: Round brilliant

Certificate IGI LG500151149

Diamond specifications and retailer prices

From £1,018 GBP
As of November 5, 2026
Save £5,455 GBP (84%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £6,473 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 2.5ct lab-grown round diamond

This 2.5ct 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 LG500151149 or 500151149. Listed at 11 retailers as of November 5, 2026, with prices from £1,018 to £6,473, a £5,455 spread on the same certified stone. MOH London lists it at £6,473. 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

2.50
Carat
I
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.8°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG500151149
Dimensions8.59 × 8.63 × 5.39 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
8.59 mm8.63 mm2.50 ctI / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG500151149
Side View
Table 56.0%Crown 35.8°GirdlePavilion 40.3°Culet: NoneDepth 62.6%

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: £6,473 GBP|Low: £1,018 GBP|High: £6,568 GBP|Avg: £3,379 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 7£1,018 GBP
Retailer 6£2,207 GBP
Retailer 10£2,401 GBP
Retailer 12£2,473 GBP
Retailer 8£2,560 GBP
Retailer 3£3,090 GBP
Retailer 11£3,200 GBP
Retailer 2£3,573 GBP
Retailer 5£3,679 GBP
Retailer 9£3,980 GBP
Retailer 4£5,731 GBP
MOH London£6,473 GBP

26 data points across 12 retailers

11 retailers£1,018 GBP to £6,473 GBP

A
Cheapest Retailer
-
£1,018 GBP
B+
Retailer 2
-
£2,207 GBP
View
B+
Retailer 3
-
£2,401 GBP
View
B+
Retailer 4
-
£2,473 GBP
View
Final sale: no returns
B+
Retailer 5
-
£2,560 GBP
View
Retailer 6
-
£2,560 GBP
View
Price last confirmed 25 days ago
B
Retailer 7
-
£3,200 GBP
View
B
Retailer 8
-
£3,573 GBP
View
B
Retailer 9
-
£3,679 GBP
View
B
Retailer 10
-
£3,980 GBP
View
Most Expensive
B
MOH London
LG500151149 · Nov 5
£6,473 GBP
View
10 more retailers have this diamond
Prices start from £1,018 GBPSave up to £5,455 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
2.50ct Round
£1,018 GBP