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Radiant|Lab Grown|IGI

1.03ct D SI1 Radiant Lab Grown Diamond

EX • D/SI1 • IGI LG849621274

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

Certificate IGI LG849621274

Diamond specifications and retailer prices

From £112 GBP
As of November 6, 2026
Save £374 GBP (77%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: £486 GBP at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 1.03ct lab-grown radiant diamond

This 1.03ct lab-grown radiant sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG849621274 or 849621274. Listed at 3 retailers as of November 6, 2026, with prices from £112 to £486, a £374 spread on the same certified stone. Brilliant Earth lists it at £486. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.03
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle44.4°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG849621274
Dimensions7.19 × 4.96 × 3.37 mm
L/W Ratio1.45
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.19 mm4.96 mm1.03 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG849621274
Side View
Table 67.0%Crown 44.4°Girdle: Slightly ThickPavilion 37.8°Culet: NoneDepth 67.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £486 GBP|Low: £112 GBP|High: £486 GBP|Avg: £335 GBP
Brilliant Earth
Retailer 2
Retailer 3
November 6, 2026
Retailer 2£112 GBP
Retailer 3£213 GBP
Brilliant Earth£486 GBP

7 data points across 3 retailers

3 retailers£112 GBP to £486 GBP

A
Cheapest Retailer
-
£112 GBP
Final sale: no returns
A
Retailer 2
-
£213 GBP
View
Most Expensive
B
Brilliant Earth
22379251A · Nov 6
£486 GBP
$650 USD
View
2 more retailers have this diamond
Prices start from £112 GBPSave up to £374 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
1.03ct Radiant
£112 GBP