CaratHunter
Plans
Radiant|Lab Grown|IGI

2.50ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG510158563

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG510158563

Diamond specifications and retailer prices

From £1,621 GBP
As of November 6, 2026
Save £5,791 GBP (78%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £7,412 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 2.5ct lab-grown radiant diamond

This 2.5ct lab-grown radiant sits in the two to three carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG510158563 or 510158563. Listed at 12 retailers as of November 5, 2026, with prices from £1,621 to £7,412, a £5,791 spread on the same certified stone. MOH London lists it at £7,412. 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
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.6°
Pavilion angle31.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG510158563
Dimensions8.84 × 6.69 × 4.51 mm
L/W Ratio1.32
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
8.84 mm6.69 mm2.50 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG510158563
Side View
Table 68.5%Crown 42.6°Girdle: STK-THKPavilion 31.2°Culet: NoneDepth 67.4%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £7,412 GBP|Low: £1,621 GBP|High: £7,532 GBP|Avg: £4,212 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 5£1,621 GBP
Retailer 4£2,991 GBP
Retailer 8£3,349 GBP
Retailer 6£3,470 GBP
Retailer 2£4,511 GBP
Retailer 3£4,601 GBP
Retailer 7£5,374 GBP
MOH London£7,412 GBP

45 data points across 8 retailers

12 retailers£1,621 GBP to £7,412 GBP

B+
Cheapest Retailer
-
£1,621 GBP
B
Retailer 2
-
£2,991 GBP
View
B
Retailer 3
-
£3,135 GBP
View
B
Retailer 4
-
£3,349 GBP
View
Final sale: no returns
B
Retailer 5
-
£3,470 GBP
View
Retailer 6
-
£3,470 GBP
View
Price last confirmed 26 days ago
B
Retailer 7
-
£3,511 GBP
View
B
Retailer 8
-
£4,335 GBP
View
B
Retailer 9
-
£4,511 GBP
View
B
Retailer 10
-
£4,601 GBP
View
B
Retailer 11
-
£5,374 GBP
View
Most Expensive
B
MOH London
LG510158563 · Nov 5
£7,412 GBP
View
11 more retailers have this diamond
Prices start from £1,621 GBPSave up to £5,791 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.

B+
2.50ct Radiant
£1,621 GBP