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Radiant|Lab Grown|IGI

1.23ct E VS2 Radiant Lab Grown Diamond

VG • E/VS2 • IGI LG591376508

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

Certificate IGI LG591376508

Diamond specifications and retailer prices

From £414 GBP
As of October 29, 2026
Save £571 GBP (58%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: £985 GBP at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 1.23ct lab-grown radiant diamond

This 1.23ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and VS2 clarity (very-slightly-included), with a very-good cut grade and certified by IGI LG591376508 or 591376508. Listed at 2 retailers as of October 29, 2026, with prices from £414 to £985, a £571 spread on the same certified stone. Brilliant Earth lists it at £985. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.23
Carat
E
Colour
VS2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle30.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG591376508
Dimensions7.92 × 5.22 × 3.36 mm
L/W Ratio1.52
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
7.92 mm5.22 mm1.23 ctE / VS2
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG591376508
Side View
Table 59.0%Crown 41.9°Girdle: Slightly ThickPavilion 30.4°Culet: NoneDepth 64.4%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 29
Current: £985 GBP|Low: £72 GBP|High: £985 GBP|Avg: £414 GBP
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
September 2, 2026
Retailer 3£101 GBP
Retailer 5£216 GBP
Retailer 4£246 GBP
Retailer 2£266 GBP
Retailer 10£403 GBP
Retailer 6£439 GBP
Retailer 7£482 GBP
Retailer 9£574 GBP
Retailer 8£801 GBP
Brilliant Earth£985 GBP

64 data points across 10 retailers

2 retailers£414 GBP to £985 GBP

B+
Cheapest Retailer
-
£414 GBP
Most Expensive
C
Brilliant Earth
14341767A · Oct 29
£985 GBP
$1,320 USD
View
1 more retailer has this diamond
Prices start from £414 GBPSave up to £571 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+
1.23ct Radiant
£414 GBP