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Radiant|Lab Grown|IGI

1.15ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG758503995

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

Certificate IGI LG758503995

Diamond specifications and retailer prices

From £260 GBP
As of November 6, 2026
Save £454 GBP (64%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £714 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.15ct lab-grown radiant diamond

This 1.15ct lab-grown radiant sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG758503995 or 758503995. Listed at 7 retailers as of November 4, 2026, with prices from £260 to £714, a £454 spread on the same certified stone. MOH London lists it at £714. 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

1.15
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.3°
Pavilion angle30.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG758503995
Dimensions8.03 × 5.17 × 3.15 mm
L/W Ratio1.55
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.03 mm5.17 mm1.15 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG758503995
Side View
Table 65.0%Crown 39.3°Girdle: MediumPavilion 30.9°Culet: NoneDepth 60.9%

Caratlytics Score

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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: £714 GBP|Low: £227 GBP|High: £724 GBP|Avg: £361 GBP|+0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2£260 GBP
Retailer 3£268 GBP
Retailer 6£273 GBP
Retailer 7£275 GBP
Retailer 4£344 GBP
Retailer 5£394 GBP
MOH London£714 GBP

37 data points across 7 retailers

7 retailers£260 GBP to £714 GBP

A
Cheapest Retailer
-
£260 GBP
A
Retailer 2
-
£268 GBP
View
A
Retailer 3
-
£273 GBP
View
A
Retailer 4
-
£275 GBP
View
A
Retailer 5
-
£344 GBP
View
B+
Retailer 6
-
£394 GBP
View
Most Expensive
B
MOH London
LG758503995 · Nov 4
£714 GBP
View
6 more retailers have this diamond
Prices start from £260 GBPSave up to £454 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
1.15ct Radiant
£260 GBP