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Radiant|Lab Grown|IGI

1.03ct G SI1 Radiant Lab Grown Diamond

VG • G/SI1 • IGI LG803628046

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

Certificate IGI LG803628046

Diamond specifications and retailer prices

From £108 GBP
As of November 6, 2026
Save £517 GBP (83%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £625 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 G colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI LG803628046 or 803628046. Listed at 16 retailers as of November 4, 2026, with prices from £108 to £625, a £517 spread on the same certified stone. MOH London lists it at £625. 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

1.03
Carat
G
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle40.3°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG803628046
Dimensions7.06 × 5.08 × 3.49 mm
L/W Ratio1.39
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.06 mm5.08 mm1.03 ctG / SI1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG803628046
Side View
Table 69.0%Crown 40.3°Girdle: Slightly ThickPavilion 38.5°Culet: NoneDepth 68.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £625 GBP|Low: £104 GBP|High: £634 GBP|Avg: £285 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 11£108 GBP
Retailer 7£120 GBP
Retailer 3£134 GBP
Retailer 12£134 GBP
Retailer 5£229 GBP
Retailer 2£253 GBP
Retailer 8£254 GBP
Retailer 6£299 GBP
Retailer 4£374 GBP
Retailer 10£431 GBP
Retailer 9£455 GBP
MOH London£625 GBP

45 data points across 12 retailers

16 retailers£108 GBP to £625 GBP

A
Cheapest Retailer
-
£108 GBP
A
Retailer 2
-
£120 GBP
View
Final sale: no returns
A
Retailer 3
-
£126 GBP
View
Retailer 4
-
£132 GBP
View
Price last confirmed 43 days ago
Retailer 5
-
£134 GBP
View
Price last confirmed 13 days ago
A
Retailer 6
-
£134 GBP
View
B+
Retailer 7
-
£221 GBP
View
A
Retailer 8
-
£229 GBP
View
B+
Retailer 9
-
£253 GBP
View
B+
Retailer 10
-
£254 GBP
View
B+
Retailer 11
-
£299 GBP
View
B
Retailer 12
-
£374 GBP
View
B
Retailer 13
-
£431 GBP
View
B
Retailer 14
-
£455 GBP
View
B
Retailer 15
-
£472 GBP
View
Most Expensive
B
MOH London
LG803628046 · Nov 4
£625 GBP
View
15 more retailers have this diamond
Prices start from £108 GBPSave up to £517 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
£108 GBP