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Radiant|Lab Grown|IGI

1.24ct H VS1 Radiant Lab Grown Diamond

EX • H/VS1 • IGI LG621415486

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

Certificate IGI LG621415486

Diamond specifications and retailer prices

From £149 GBP
As of November 4, 2026
Save £776 GBP (84%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £925 GBP at Taylor and Hart · As of November 4, 2026
View at Taylor and Hart

About this 1.24ct lab-grown radiant diamond

This 1.24ct lab-grown radiant sits in the classic one-carat band, graded H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG621415486 or 621415486. Listed at 16 retailers as of November 4, 2026, with prices from £149 to £925, a £776 spread on the same certified stone. Taylor and Hart lists it at £925. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.24
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.9°
Pavilion angle33.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG621415486
Dimensions7.50 × 5.35 × 3.52 mm
L/W Ratio1.40
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
7.50 mm5.35 mm1.24 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG621415486
Side View
Table 63.0%Crown 39.9°Girdle: MED-STKPavilion 33.7°Culet: NoneDepth 65.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: £401 GBP|Low: £107 GBP|High: £925 GBP|Avg: £447 GBP|-3.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Taylor and Hart
November 4, 2026
Retailer 12£149 GBP
Retailer 11£155 GBP
Retailer 6£285 GBP
Retailer 10£293 GBP
Retailer 8£306 GBP
Retailer 2£347 GBP
Retailer 1£401 GBP
Retailer 5£403 GBP
Retailer 4£437 GBP
Retailer 9£562 GBP
Retailer 3£708 GBP
Retailer 7£773 GBP
Taylor and Hart£925 GBP

25 data points across 13 retailers

16 retailers£149 GBP to £925 GBP

Retailer 1
-
£134 GBP
Price last confirmed 17 days ago
A
Retailer 2
-
£149 GBP
View
Final sale: no returns
Retailer 3
-
£155 GBP
View
Price last confirmed 16 days ago
Retailer 4
-
£166 GBP
View
Price last confirmed 17 days ago
A
Retailer 5
-
£285 GBP
View
A
Retailer 6
-
£293 GBP
View
A
Retailer 7
-
£306 GBP
View
A
Retailer 8
-
£347 GBP
View
B+
Retailer 9
-
£401 GBP
View
A
Retailer 10
-
£403 GBP
View
B+
Retailer 11
-
£512 GBP
View
Retailer 12
-
£532 GBP
View
Price last confirmed 16 days ago
B+
Retailer 13
-
£562 GBP
View
B
Retailer 14
-
£708 GBP
View
B
Retailer 15
-
£773 GBP
View
Most Expensive
B
Taylor and Hart
YLIORBZ · Nov 4
£925 GBP
$1,245 USD
View
15 more retailers have this diamond
Prices start from £149 GBPSave up to £776 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
1.24ct Radiant
£149 GBP