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Radiant|Lab Grown|IGI

2.51ct F IF Radiant Lab Grown Diamond

ID • F/IF • IGI LG741519444

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

Certificate IGI LG741519444

Diamond specifications and retailer prices

From £1,227 GBP
$1,647 USD
As of November 2, 2026
Save £1,461 GBP (54%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £3,037 GBP at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 2.51ct lab-grown radiant diamond

This 2.51ct lab-grown radiant sits in the two to three carat band, graded F colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG741519444 or 741519444. Listed at 5 retailers as of November 1, 2026, with a 119% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

2.51
Carat
F
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41°
Pavilion angle38.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG741519444
Dimensions10.35 × 6.47 × 4.32 mm
L/W Ratio1.60
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.35 mm6.47 mm2.51 ctF / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG741519444
Side View
Table 63.0%Crown 41°Girdle: Slightly ThickPavilion 38.6°Culet: NoneDepth 66.8%

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 2
Current: £3,037 GBP|Low: £849 GBP|High: £5,656 GBP|Avg: £2,328 GBP|-2.1%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
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Retailer 15
October 31, 2026
Retailer 11£849 GBP
Retailer 3£1,040 GBP
Retailer 10£1,227 GBP
Retailer 4£1,266 GBP
Retailer 9£1,284 GBP
Retailer 12£1,364 GBP
Retailer 13£1,768 GBP
Retailer 6£1,786 GBP
Retailer 2£2,526 GBP
Retailer 8£2,689 GBP
Retailer 14£2,742 GBP
Retailer 15£2,948 GBP
Rare Carat£3,037 GBP
Retailer 7£4,424 GBP
Retailer 5£5,656 GBP

8 data points across 15 retailers

5 retailers£1,227 GBP to £2,689 GBP

A
Cheapest Retailer
-
£1,227 GBP
$1,647 USD
A
Retailer 2
-
£1,284 GBP
$1,723 USD
View
B+
Retailer 3
-
£2,526 GBP
A$5,214 AUD
View
B+
Retailer 4
-
£2,689 GBP
$3,608 USD
View
Most Expensive
Rare Carat
JK-271 · Oct 21
£3,037 GBP
$4,075 USD
View
Price last confirmed 12 days ago
4 more retailers have this diamond
Prices start from £1,227 GBPSave up to £1,461 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 Radiant
£1,227 GBP