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Cushion|Lab Grown|IGI

4.20ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG805652143

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG805652143

Diamond specifications and retailer prices

From €1,850 EUR
£1,627 GBP
As of November 1, 2026
Save €5,915 EUR (76%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: €7,764 EUR at Taylor and Hart · As of October 31, 2026
View at Taylor and Hart

About this 4.2ct lab-grown cushion diamond

This 4.2ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG805652143 or 805652143. Listed at 18 retailers as of October 31, 2026, with prices from €1,850 to €7,764, a €5,915 spread on the same certified stone. Taylor and Hart lists it at €7,764. 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

4.20
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.8°
Pavilion angle39.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG805652143
Dimensions11.28 × 7.92 × 5.69 mm
L/W Ratio1.42
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.28 mm7.92 mm4.20 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG805652143
Side View
Table 66.0%Crown 38.8°Girdle: MED-STKPavilion 39.3°Culet: NoneDepth 71.8%

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: €3,470 EUR|Low: €1,723 EUR|High: €8,173 EUR|Avg: €4,018 EUR|+5.5%
Retailer 1
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
Taylor and Hart
November 1, 2026
Retailer 10€1,850 EUR
Retailer 4€2,144 EUR
Retailer 15€2,265 EUR
Retailer 16€2,434 EUR
Retailer 2€2,566 EUR
Retailer 11€3,057 EUR
Retailer 13€3,246 EUR
Retailer 12€3,450 EUR
Retailer 1€3,470 EUR
Retailer 6€4,215 EUR
Retailer 14€4,727 EUR
Retailer 9€4,757 EUR
Retailer 3€5,205 EUR
Retailer 7€5,984 EUR
Retailer 8€6,356 EUR
Retailer 5€7,429 EUR
Taylor and Hart€7,764 EUR

21 data points across 17 retailers

18 retailers€1,850 EUR to €7,764 EUR

A
Cheapest Retailer
-
€1,850 EUR
£1,627 GBP
A
Retailer 2
-
€2,144 EUR
$2,395 USD
View
Final sale: no returns
Retailer 3
-
€2,162 EUR
$2,415 USD
View
Price last confirmed 21 days ago
A
Retailer 4
-
€2,265 EUR
$2,530 USD
View
A
Retailer 5
-
€2,434 EUR
$2,719 USD
View
A
Retailer 6
-
€2,566 EUR
HK$22,400 HKD
View
A
Retailer 7
-
€3,057 EUR
£2,689 GBP
View
A
Retailer 8
-
€3,246 EUR
$3,626 USD
View
A
Retailer 9
-
€3,450 EUR
View
A
Retailer 10
-
€3,470 EUR
$3,877 USD
View
A
Retailer 11
-
€4,215 EUR
£3,708 GBP
View
A
Retailer 12
-
€4,727 EUR
ZAR 85,319 ZAR
View
A
Retailer 13
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€4,757 EUR
A$8,177 AUD
View
A
Retailer 14
-
€5,205 EUR
$5,815 USD
View
A
Retailer 15
-
€5,984 EUR
$6,685 USD
View
A
Retailer 16
-
€6,356 EUR
£5,591 GBP
View
B+
Retailer 17
-
€7,429 EUR
SGD 11,216 SGD
View
Most Expensive
B+
Taylor and Hart
AP5JNQW · Oct 31
€7,764 EUR
$8,675 USD
View
17 more retailers have this diamond
Prices start from €1,850 EURSave up to €5,915 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
4.20ct Cushion
€1,850 EUR