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Cushion|Lab Grown|IGI

3.80ct E SI1 Cushion Lab Grown Diamond

GD • E/SI1 • IGI LG655438364

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG655438364

Diamond specifications and retailer prices

From €474 EUR
$529 USD
As of October 28, 2026
Save €3,268 EUR (87%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €3,741 EUR at Kay Jewelers · As of October 26, 2026
View at Kay Jewelers

About this 3.8ct lab-grown cushion diamond

This 3.8ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade and certified by IGI LG655438364 or 655438364. Listed at 7 retailers as of October 26, 2026, with prices from €474 to €3,741, a €3,268 spread on the same certified stone. Kay Jewelers lists it at €3,741. 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

3.80
Carat
E
Colour
SI1
Clarity
Good
Cut

Specifications

CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG655438364
Dimensions9.05 × 8.98 × 6.08 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.05 mm8.98 mm3.80 ctE / SI1
OriginLab Grown
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG655438364
Side View
Table 61.0%Crown 35.1°Girdle: MED-STKPavilion 40.3°Culet: NoneDepth 67.7%

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: Oct 28
Current: €3,741 EUR|Low: €327 EUR|High: €3,750 EUR|Avg: €1,888 EUR
Kay Jewelers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
October 28, 2026
Retailer 9€474 EUR
Retailer 4€721 EUR
Retailer 6€785 EUR
Retailer 2€788 EUR
Retailer 11€940 EUR
Retailer 12€971 EUR
Retailer 8€1,710 EUR
Retailer 10€1,852 EUR
Retailer 5€2,312 EUR
Retailer 3€2,981 EUR
Retailer 7€3,589 EUR
Kay Jewelers€3,741 EUR

19 data points across 12 retailers

7 retailers€474 EUR to €3,741 EUR

A
Cheapest Retailer
-
€474 EUR
$529 USD
Final sale: no returns
B+
Retailer 2
-
€785 EUR
$877 USD
View
B+
Retailer 3
-
€788 EUR
$880 USD
View
B
Retailer 4
-
€1,710 EUR
$1,910 USD
View
B
Retailer 5
-
€2,312 EUR
£2,034 GBP
View
B
Retailer 6
-
€3,589 EUR
$4,010 USD
View
Most Expensive
C
Kay Jewelers
252769047 · Oct 26
€3,741 EUR
$4,180 USD
View
6 more retailers have this diamond
Prices start from €474 EURSave up to €3,268 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
3.80ct Cushion
€474 EUR