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Radiant|Lab Grown|IGI

1.04ct E FL Radiant Lab Grown Diamond

ID • E/FL • IGI LG840617156

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

Certificate IGI LG840617156

Diamond specifications and retailer prices

From £249 GBP
$332 USD
As of October 28, 2026
Save £1,395 GBP (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £1,645 GBP at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

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 FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG840617156 or 840617156. Listed at 12 retailers as of October 28, 2026, with prices from £249 to £1,645, a £1,395 spread on the same certified stone. Brilliant Earth lists it at £1,645. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.04
Carat
E
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.9°
Pavilion angle35°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840617156
Dimensions7.08 × 5.03 × 3.35 mm
L/W Ratio1.41
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
7.08 mm5.03 mm1.04 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840617156
Side View
Table 67.0%Crown 41.9°Girdle: MediumPavilion 35°Culet: NoneDepth 66.6%

Caratlytics Score

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

Price History

Last verified: Oct 28
Current: £489 GBP|Low: £249 GBP|High: £1,124 GBP|Avg: £514 GBP|-2.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 29, 2026
Retailer 7£249 GBP
Retailer 4£294 GBP
Retailer 2£308 GBP
Retailer 6£372 GBP
Retailer 9£394 GBP
Retailer 11£451 GBP
Retailer 5£475 GBP
Retailer 1£489 GBP
Retailer 8£739 GBP
Retailer 3£854 GBP
Retailer 10£1,115 GBP

14 data points across 11 retailers

12 retailers£249 GBP to £1,645 GBP

A+
Cheapest Retailer
-
£249 GBP
$332 USD
Final sale: no returns
A
Retailer 2
-
£294 GBP
View
A
Retailer 3
-
£308 GBP
HK$3,200 HKD
View
A
Retailer 4
-
£372 GBP
$495 USD
View
A
Retailer 5
-
£394 GBP
$525 USD
View
A
Retailer 6
-
£451 GBP
€572 EUR
View
A
Retailer 7
-
£475 GBP
ZAR 10,225 ZAR
View
B+
Retailer 8
-
£489 GBP
View
B+
Retailer 9
-
£739 GBP
SGD 1,329 SGD
View
B+
Retailer 10
-
£854 GBP
$1,137 USD
View
B
Retailer 11
-
£1,115 GBP
View
Most Expensive
B
Brilliant Earth
22132421A · Oct 28
£1,645 GBP
$2,190 USD
View
11 more retailers have this diamond
Prices start from £249 GBPSave up to £1,395 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+
1.04ct Radiant
£249 GBP