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Radiant|Lab Grown|IGI

1.04ct E SI1 Radiant Lab Grown Diamond

ID • E/SI1 • IGI LG472172673

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

Certificate IGI LG472172673

Diamond specifications and retailer prices

From £525 GBP
As of November 6, 2026
Save £464 GBP (47%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,713 GBP at NZ Jewellers · As of November 6, 2026
View at NZ Jewellers

About this 1.04ct lab-grown radiant diamond

This 1.04ct 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 LG472172673 or 472172673. Listed at 12 retailers as of November 6, 2026, with a 88% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.04
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle49.6°
Pavilion angle30.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG472172673
Dimensions6.34 × 5.00 × 3.49 mm
L/W Ratio1.27
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
6.34 mm5.00 mm1.04 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG472172673
Side View
Table 65.0%Crown 49.6°Girdle: STK-THKPavilion 30.8°Culet: NoneDepth 69.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £1,713 GBP|Low: £504 GBP|High: £2,421 GBP|Avg: £1,007 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 7£525 GBP
Retailer 11£572 GBP
Retailer 3£588 GBP
Retailer 9£609 GBP
Retailer 8£695 GBP
Retailer 5£740 GBP
Retailer 2£964 GBP
Retailer 10£989 GBP
Retailer 6£1,501 GBP
NZ Jewellers£1,713 GBP
Retailer 4£2,386 GBP

44 data points across 11 retailers

12 retailers£525 GBP to £989 GBP

B+
Cheapest Retailer
-
£525 GBP
B
Retailer 2
-
£572 GBP
View
B
Retailer 3
-
£588 GBP
View
Final sale: no returns
Retailer 4
-
£609 GBP
View
Price last confirmed 26 days ago
B
Retailer 5
-
£609 GBP
View
B
Retailer 6
-
£695 GBP
View
B
Retailer 7
-
£740 GBP
View
B
Retailer 8
-
£964 GBP
View
B
Retailer 9
-
£989 GBP
View
Retailer 10
-
£1,501 GBP
View
Price under review
Most Expensive
NZ Jewellers
2a5ce30c-afbc-4413-a17d-52200b8a1a68 · Nov 6
£1,713 GBP
$2,293 USD
View
Price under review
10 more retailers have this diamond
Prices start from £525 GBPSave up to £464 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.

B+
1.04ct Radiant
£525 GBP