Cushion|Lab Grown|IGI

1.28ct E FL Cushion Lab Grown Diamond

GD • E/FL • IGI LG840622511

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

Certificate IGI LG840622511

Diamond specifications and retailer prices

From €378 EUR
$422 USD
As of October 30, 2026
Save €1,703 EUR (82%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €2,081 EUR at Helzberg Diamonds · As of October 31, 2026
View at Helzberg Diamonds

About this 1.28ct lab-grown cushion diamond

This 1.28ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and FL clarity (flawless or internally-flawless), with a standard cut grade and certified by IGI LG840622511 or 840622511. Listed at 18 retailers as of October 30, 2026, with prices from €378 to €2,081, a €1,703 spread on the same certified stone. Helzberg Diamonds lists it at €2,081. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.28
Carat
E
Colour
FL
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle36.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840622511
Dimensions6.20 × 6.14 × 4.10 mm
L/W Ratio1.01
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
6.20 mm6.14 mm1.28 ctE / FL
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840622511
Side View
Table 62.0%Crown 35.1°Girdle: MED-STKPavilion 36.2°Culet: NoneDepth 66.8%

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: Oct 30
Current: €2,081 EUR|Low: €378 EUR|High: €2,426 EUR|Avg: €1,089 EUR
Helzberg Diamonds
Retailer 2
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Retailer 7
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Retailer 11
Retailer 12
Retailer 13
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Retailer 18
October 31, 2026
Retailer 7€378 EUR
Retailer 17€418 EUR
Retailer 13€443 EUR
Retailer 5€629 EUR
Retailer 16€631 EUR
Retailer 8€666 EUR
Retailer 14€706 EUR
Retailer 15€718 EUR
Retailer 2€756 EUR
Retailer 3€816 EUR
Retailer 11€1,042 EUR
Retailer 6€1,378 EUR
Retailer 9€1,395 EUR
Retailer 10€1,450 EUR
Retailer 4€1,607 EUR
Retailer 18€1,636 EUR
Retailer 12€1,701 EUR
Helzberg Diamonds€2,081 EUR

18 data points across 18 retailers

18 retailers€378 EUR to €2,081 EUR

A
Cheapest Retailer
-
€378 EUR
$422 USD
Final sale: no returns
A
Retailer 2
-
€418 EUR
$467 USD
View
A
Retailer 3
-
€443 EUR
£390 GBP
View
A
Retailer 4
-
€629 EUR
$703 USD
View
B+
Retailer 5
-
€631 EUR
$705 USD
View
A
Retailer 6
-
€666 EUR
$744 USD
View
A
Retailer 7
-
€706 EUR
View
A
Retailer 8
-
€718 EUR
ZAR 12,963 ZAR
View
B+
Retailer 9
-
€756 EUR
£665 GBP
View
B+
Retailer 10
-
€816 EUR
$912 USD
View
B+
Retailer 11
-
€1,042 EUR
$1,164 USD
View
B
Retailer 12
-
€1,378 EUR
$1,540 USD
View
B
Retailer 13
-
€1,395 EUR
SGD 2,106 SGD
View
Retailer 14
-
€1,450 EUR
$1,620 USD
View
Price last confirmed 16 days ago
B
Retailer 15
-
€1,607 EUR
$1,795 USD
View
B
Retailer 16
-
€1,636 EUR
£1,439 GBP
View
B
Retailer 17
-
€1,701 EUR
$1,900 USD
View
Most Expensive
B
Helzberg Diamonds
ZXZOKGMIILHH · Oct 31
€2,081 EUR
$2,325 USD
View
17 more retailers have this diamond
Prices start from €378 EURSave up to €1,703 EUR

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
1.28ct Cushion
€378 EUR