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Radiant|Lab Grown|IGI

1.00ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG529265219

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

Certificate IGI LG529265219

Diamond specifications and retailer prices

From £99 GBP
As of November 2, 2026
Save £920 GBP (90%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £1,019 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1ct lab-grown radiant diamond

This 1ct 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 LG529265219 or 529265219. Listed at 15 retailers as of November 2, 2026, with prices from £99 to £1,019, a £920 spread on the same certified stone. MOH London lists it at £1,019. 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

1.00
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.3°
Pavilion angle33.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG529265219
Dimensions7.05 × 5.10 × 3.34 mm
L/W Ratio1.38
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.05 mm5.10 mm1.00 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG529265219
Side View
Table 62.0%Crown 39.3°Girdle: MED-STKPavilion 33.6°Culet: NoneDepth 65.5%

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 2
Current: £1,019 GBP|Low: £94 GBP|High: £1,030 GBP|Avg: £296 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 3, 2026
Retailer 6£99 GBP
Retailer 9£110 GBP
Retailer 8£122 GBP
Retailer 7£163 GBP
Retailer 2£205 GBP
Retailer 3£216 GBP
Retailer 4£232 GBP
Retailer 10£306 GBP
Retailer 5£414 GBP
MOH London£1,019 GBP

41 data points across 10 retailers

15 retailers£99 GBP to £1,019 GBP

A
Cheapest Retailer
-
£99 GBP
A
Retailer 2
-
£114 GBP
View
Retailer 3
-
£122 GBP
View
Price last confirmed 13 days ago
A
Retailer 4
-
£122 GBP
View
A
Retailer 5
-
£143 GBP
View
B+
Retailer 6
-
£163 GBP
View
A
Retailer 7
-
£205 GBP
View
A
Retailer 8
-
£210 GBP
View
A
Retailer 9
-
£216 GBP
View
A
Retailer 10
-
£232 GBP
View
B+
Retailer 11
-
£306 GBP
View
B
Retailer 12
-
£392 GBP
View
B+
Retailer 13
-
£414 GBP
View
B
Retailer 14
-
£469 GBP
View
Most Expensive
B
MOH London
LG529265219 · Nov 2
£1,019 GBP
View
14 more retailers have this diamond
Prices start from £99 GBPSave up to £920 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
1.00ct Radiant
£99 GBP