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Cushion|Lab Grown|IGI

1.04ct E FL Cushion Lab Grown Diamond

ID • E/FL • IGI LG840630407

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG840630407

Diamond specifications and retailer prices

From £253 GBP
$339 USD
As of October 30, 2026
Save £1,142 GBP (82%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £1,395 GBP at Helzberg Diamonds · As of October 29, 2026
View at Helzberg Diamonds

About this 1.04ct lab-grown cushion diamond

This 1.04ct lab-grown cushion 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 LG840630407 or 840630407. Listed at 16 retailers as of October 29, 2026, with prices from £253 to £1,395, a £1,142 spread on the same certified stone. Helzberg Diamonds lists it at £1,395. 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 angle34.2°
Pavilion angle34.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840630407
Dimensions5.83 × 5.82 × 3.63 mm
L/W Ratio1.00
Girdle conditionFaceted
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
5.83 mm5.82 mm1.04 ctE / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840630407
Side View
Table 65.0%Crown 34.2°Girdle: MED-THKPavilion 34.9°Culet: NoneDepth 62.4%

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: Oct 30
Current: £1,395 GBP|Low: £253 GBP|High: £1,642 GBP|Avg: £759 GBP
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 30, 2026
Retailer 5£253 GBP
Retailer 9£297 GBP
Retailer 13£425 GBP
Retailer 6£458 GBP
Retailer 3£460 GBP
Retailer 11£463 GBP
Retailer 15£467 GBP
Retailer 12£481 GBP
Retailer 10£498 GBP
Retailer 7£756 GBP
Retailer 4£936 GBP
Retailer 8£993 GBP
Retailer 16£1,014 GBP
Retailer 14£1,124 GBP
Retailer 2£1,209 GBP
Helzberg Diamonds£1,395 GBP

18 data points across 16 retailers

16 retailers£253 GBP to £1,395 GBP

A
Cheapest Retailer
-
£253 GBP
$339 USD
Final sale: no returns
A
Retailer 2
-
£297 GBP
View
A
Retailer 3
-
£425 GBP
$570 USD
View
A
Retailer 4
-
£458 GBP
$613 USD
View
A
Retailer 5
-
£460 GBP
$616 USD
View
A
Retailer 6
-
£463 GBP
€591 EUR
View
A
Retailer 7
-
£467 GBP
$626 USD
View
A
Retailer 8
-
£481 GBP
ZAR 10,421 ZAR
View
A
Retailer 9
-
£498 GBP
View
B+
Retailer 10
-
£756 GBP
SGD 1,368 SGD
View
B+
Retailer 11
-
£936 GBP
$1,254 USD
View
Retailer 12
-
£993 GBP
$1,330 USD
View
Price last confirmed 11 days ago
B+
Retailer 13
-
£1,014 GBP
$1,359 USD
View
B+
Retailer 14
-
£1,124 GBP
View
B
Retailer 15
-
£1,209 GBP
$1,620 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOKGMJGKGN · Oct 29
£1,395 GBP
$1,869 USD
View
15 more retailers have this diamond
Prices start from £253 GBPSave up to £1,142 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 Cushion
£253 GBP