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Radiant|Lab Grown|IGI

1.03ct D SI1 Radiant Lab Grown Diamond

EX • D/SI1 • IGI LG794641601

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

Certificate IGI LG794641601

Diamond specifications and retailer prices

From £109 GBP
As of November 6, 2026
Save £523 GBP (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: £632 GBP at MOH London · As of November 4, 2026
View at MOH London

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 LG794641601 or 794641601. Listed at 11 retailers as of November 4, 2026, with prices from £109 to £632, a £523 spread on the same certified stone. MOH London lists it at £632. 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 angle23.6°
Pavilion angle36.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG794641601
Dimensions7.35 × 4.87 × 3.32 mm
L/W Ratio1.51
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.35 mm4.87 mm1.03 ctD / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG794641601
Side View
Table 64.0%Crown 23.6°Girdle: MED-STKPavilion 36.6°Culet: NoneDepth 68.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £632 GBP|Low: £64 GBP|High: £749 GBP|Avg: £323 GBP|+2.8%
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
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Retailer 17
November 6, 2026
Retailer 4£64 GBP
Retailer 14£109 GBP
Retailer 15£121 GBP
Retailer 13£127 GBP
Retailer 3£135 GBP
Retailer 2£161 GBP
Retailer 5£223 GBP
Retailer 10£233 GBP
Retailer 16£250 GBP
Retailer 6£315 GBP
Retailer 7£335 GBP
Retailer 11£436 GBP
Retailer 17£480 GBP
Retailer 8£481 GBP
Retailer 12£598 GBP
MOH London£632 GBP
Retailer 9£749 GBP

42 data points across 17 retailers

11 retailers£109 GBP to £632 GBP

A
Cheapest Retailer
-
£109 GBP
A
Retailer 2
-
£121 GBP
View
Final sale: no returns
A
Retailer 3
-
£127 GBP
View
A
Retailer 4
-
£135 GBP
View
A
Retailer 5
-
£161 GBP
View
A
Retailer 6
-
£233 GBP
View
A
Retailer 7
-
£250 GBP
View
B+
Retailer 8
-
£436 GBP
View
B
Retailer 9
-
£480 GBP
View
B
Retailer 10
-
£598 GBP
View
Most Expensive
B
MOH London
LG794641601 · Nov 4
£632 GBP
View
10 more retailers have this diamond
Prices start from £109 GBPSave up to £523 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
£109 GBP