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Radiant|Lab Grown|IGI

1.25ct E VS1 Radiant Lab Grown Diamond

ID • E/VS1 • IGI LG818644372

Shape and cutting style on the report: Square step cut

Certificate IGI LG818644372

Diamond specifications and retailer prices

From £275 GBP
$368 USD
As of October 30, 2026
Save £956 GBP (78%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £1,230 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.25ct lab-grown radiant diamond

This 1.25ct lab-grown radiant sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG818644372 or 818644372. Listed at 11 retailers as of October 29, 2026, with prices from £275 to £1,230, a £956 spread on the same certified stone. MOH London lists it at £1,230. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.25
Carat
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle45.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818644372
Dimensions6.22 × 6.18 × 3.95 mm
L/W Ratio1.01
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.22 mm6.18 mm1.25 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818644372
Side View
Table 65.0%Crown 33°Girdle: MediumPavilion 45.5°Culet: NoneDepth 63.9%

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: Oct 30
Current: £1,230 GBP|Low: £196 GBP|High: £1,265 GBP|Avg: £765 GBP|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 4£275 GBP
Retailer 7£305 GBP
Retailer 3£334 GBP
Retailer 2£410 GBP
Retailer 6£496 GBP
Retailer 5£525 GBP
Retailer 8£976 GBP
Retailer 10£1,014 GBP
Retailer 9£1,183 GBP
Retailer 11£1,200 GBP
MOH London£1,230 GBP

23 data points across 11 retailers

11 retailers£275 GBP to £1,230 GBP

A
Cheapest Retailer
-
£275 GBP
$368 USD
Final sale: no returns
A
Retailer 2
-
£305 GBP
$409 USD
View
A
Retailer 3
-
£334 GBP
HK$3,500 HKD
View
B+
Retailer 4
-
£410 GBP
$550 USD
View
B
Retailer 5
-
£496 GBP
$665 USD
View
B+
Retailer 6
-
£525 GBP
ZAR 11,356 ZAR
View
B
Retailer 7
-
£976 GBP
SGD 1,768 SGD
View
B
Retailer 8
-
£1,014 GBP
$1,359 USD
View
B
Retailer 9
-
£1,183 GBP
View
B
Retailer 10
-
£1,200 GBP
$1,608 USD
View
Most Expensive
B
MOH London
LG818644372 · Oct 29
£1,230 GBP
View
10 more retailers have this diamond
Prices start from £275 GBPSave up to £956 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
1.25ct Radiant
£275 GBP