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Cushion|Lab Grown|IGI

5.28ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG780663589

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG780663589

Diamond specifications and retailer prices

From €4,970 EUR
$5,553 USD
As of November 1, 2026
Save €23,692 EUR (83%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: €28,663 EUR at With Clarity · As of October 31, 2026
View at With Clarity

About this 5.28ct lab-grown cushion diamond

This 5.28ct lab-grown cushion sits in the over five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780663589 or 780663589. Listed at 13 retailers as of October 31, 2026, with prices from €4,970 to €28,663, a €23,692 spread on the same certified stone. With Clarity lists it at €28,663. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

5.28
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37°
Pavilion angle35.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG780663589
Dimensions11.36 × 9.42 × 6.23 mm
L/W Ratio1.21
Girdle conditionFaceted
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
11.36 mm9.42 mm5.28 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG780663589
Side View
Table 60.0%Crown 37°Girdle: MED-STKPavilion 35.9°Culet: NoneDepth 66.1%

Caratlytics Score

How it works →
A
Excellent
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: Nov 1
Current: €16,608 EUR|Low: €4,970 EUR|High: €32,102 EUR|Avg: €13,264 EUR|-3.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
With Clarity
November 1, 2026
Retailer 8€4,970 EUR
Retailer 11€6,783 EUR
Retailer 5€6,872 EUR
Retailer 2€7,362 EUR
Retailer 7€8,588 EUR
Retailer 6€8,853 EUR
Retailer 3€9,497 EUR
Retailer 12€12,483 EUR
Retailer 9€15,038 EUR
Retailer 1€16,608 EUR
Retailer 4€16,636 EUR
Retailer 10€19,200 EUR
With Clarity€28,663 EUR

39 data points across 13 retailers

13 retailers€4,970 EUR to €28,663 EUR

A
Cheapest Retailer
-
€4,970 EUR
$5,553 USD
A
Retailer 2
-
€6,783 EUR
HK$59,200 HKD
View
A
Retailer 3
-
€6,872 EUR
£6,045 GBP
View
Retailer 4
-
€7,362 EUR
$8,225 USD
View
Price last confirmed 11 days ago
A
Retailer 5
-
€8,588 EUR
$9,595 USD
View
A
Retailer 6
-
€8,853 EUR
View
A
Retailer 7
-
€9,497 EUR
$10,610 USD
View
A
Retailer 8
-
€12,483 EUR
£10,981 GBP
View
B+
Retailer 9
-
€15,038 EUR
$16,800 USD
View
B+
Retailer 10
-
€16,608 EUR
A$28,545 AUD
View
B+
Retailer 11
-
€16,636 EUR
$18,586 USD
View
B+
Retailer 12
-
€19,200 EUR
$21,450 USD
View
Most Expensive
B
With Clarity
780663589 · Oct 31
€28,663 EUR
$32,022 USD
View
12 more retailers have this diamond
Prices start from €4,970 EURSave up to €23,692 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
5.28ct Cushion
€4,970 EUR