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Radiant|Lab Grown|IGI

1.28ct E VS1 Radiant Lab Grown Diamond

ID • E/VS1 • IGI LG813657649

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

Certificate IGI LG813657649

Diamond specifications and retailer prices

From £166 GBP
$223 USD
As of October 30, 2026
Save £704 GBP (81%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: £870 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.28ct lab-grown radiant diamond

This 1.28ct 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 LG813657649 or 813657649. Listed at 21 retailers as of October 29, 2026, with prices from £166 to £870, a £704 spread on the same certified stone. MOH London lists it at £870. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
E
Colour
VS1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle25.6°
Pavilion angle36.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG813657649
Dimensions7.30 × 5.46 × 3.72 mm
L/W Ratio1.34
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.30 mm5.46 mm1.28 ctE / VS1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG813657649
Side View
Table 67.0%Crown 25.6°Girdle: Slightly ThickPavilion 36.4°Culet: NoneDepth 68.1%

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: £870 GBP|Low: £162 GBP|High: £871 GBP|Avg: £431 GBP|+3.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 31, 2026
Retailer 5£166 GBP
Retailer 11£185 GBP
Retailer 2£310 GBP
Retailer 9£318 GBP
Retailer 4£322 GBP
Retailer 7£336 GBP
Retailer 6£358 GBP
Retailer 14£425 GBP
Retailer 10£452 GBP
Retailer 12£478 GBP
Retailer 13£493 GBP
Retailer 3£635 GBP
Retailer 8£664 GBP
MOH London£870 GBP

42 data points across 14 retailers

21 retailers£166 GBP to £870 GBP

Retailer 1
-
£145 GBP
$194 USD
Price last confirmed 31 days ago
Retailer 2
-
£149 GBP
$199 USD
View
Price last confirmed 23 days ago
A
Retailer 3
-
£166 GBP
$223 USD
View
Final sale: no returns
Retailer 4
-
£168 GBP
$225 USD
View
Price last confirmed 33 days ago
Retailer 5
-
£178 GBP
$238 USD
View
Price last confirmed 32 days ago
Retailer 6
-
£184 GBP
$247 USD
View
Price last confirmed 23 days ago
Retailer 7
-
£184 GBP
$247 USD
View
Price last confirmed 23 days ago
A
Retailer 8
-
£310 GBP
€396 EUR
View
A
Retailer 9
-
£318 GBP
ZAR 6,878 ZAR
View
A
Retailer 10
-
£322 GBP
$431 USD
View
A
Retailer 11
-
£336 GBP
View
A
Retailer 12
-
£358 GBP
$480 USD
View
B+
Retailer 13
-
£425 GBP
$570 USD
View
B+
Retailer 14
-
£452 GBP
A$932 AUD
View
B+
Retailer 15
-
£478 GBP
$640 USD
View
Retailer 16
-
£493 GBP
$660 USD
View
Price last confirmed 12 days ago
Retailer 17
-
£592 GBP
$793 USD
View
Price last confirmed 23 days ago
B
Retailer 18
-
£595 GBP
$797 USD
View
B
Retailer 19
-
£635 GBP
$851 USD
View
B
Retailer 20
-
£664 GBP
$890 USD
View
Most Expensive
B
MOH London
LG813657649 · Oct 29
£870 GBP
View
20 more retailers have this diamond
Prices start from £166 GBPSave up to £704 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
1.28ct Radiant
£166 GBP