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Radiant|Lab Grown|IGI

2.50ct G SI1 Radiant Lab Grown Diamond

ID • G/SI1 • IGI LG517202190

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

Certificate IGI LG517202190

Diamond specifications and retailer prices

From £1,449 GBP
As of November 6, 2026
Save £5,963 GBP (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £9,076 GBP at Reve Diamonds · As of November 6, 2026
View at Reve Diamonds

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 LG517202190 or 517202190. Listed at 14 retailers as of November 5, 2026, with a 411% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle41°
Pavilion angle32.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG517202190
Dimensions8.89 × 6.62 × 4.69 mm
L/W Ratio1.34
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
8.89 mm6.62 mm2.50 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG517202190
Side View
Table 64.0%Crown 41°Girdle: MED-STKPavilion 32.1°Culet: NoneDepth 70.8%

Caratlytics Score

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

Price History

Last verified: Nov 6
Current: £4,511 GBP|Low: £1,449 GBP|High: £9,076 GBP|Avg: £4,788 GBP|-2.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Reve Diamonds
November 7, 2026
Retailer 5£1,449 GBP
Retailer 4£2,991 GBP
Retailer 8£3,349 GBP
Retailer 6£3,470 GBP
Retailer 1£4,511 GBP
Retailer 3£4,601 GBP
Retailer 7£5,374 GBP
Retailer 2£7,412 GBP
Reve Diamonds£9,076 GBP

45 data points across 9 retailers

14 retailers£1,449 GBP to £7,412 GBP

B+
Cheapest Retailer
-
£1,449 GBP
B
Retailer 2
-
£2,991 GBP
View
B
Retailer 3
-
£3,135 GBP
View
B
Retailer 4
-
£3,154 GBP
View
B
Retailer 5
-
£3,349 GBP
View
Final sale: no returns
B
Retailer 6
-
£3,470 GBP
View
Retailer 7
-
£3,470 GBP
View
Price last confirmed 26 days ago
B
Retailer 8
-
£3,511 GBP
View
B
Retailer 9
-
£4,335 GBP
View
B
Retailer 10
-
£4,511 GBP
View
B
Retailer 11
-
£4,601 GBP
View
B
Retailer 12
-
£5,374 GBP
View
B
Retailer 13
-
£7,412 GBP
View
Most Expensive
Reve Diamonds
BBCD2517D · Nov 6
£9,076 GBP
$12,148 USD
View
Price under review
13 more retailers have this diamond
Prices start from £1,449 GBPSave up to £5,963 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
£1,449 GBP