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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 $2,073 USD
£1,632 GBP
As of October 30, 2026
Save $6,602 USD (76%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $8,675 USD at Taylor and Hart · As of October 30, 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 30, 2026, with prices from $2,073 to $8,675, a $6,602 spread on the same certified stone. Taylor and Hart lists it at $8,675. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 30
Current: $2,073 USD|Low: $1,925 USD|High: $9,131 USD|Avg: $4,540 USD|+1.8%
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
October 30, 2026
Retailer 1$2,073 USD
Retailer 16$2,395 USD
Retailer 12$2,530 USD
Retailer 13$2,719 USD
Retailer 14$2,867 USD
Retailer 9$3,415 USD
Retailer 5$3,730 USD
Retailer 11$3,882 USD
Retailer 7$4,079 USD
Retailer 3$4,709 USD
Retailer 8$4,961 USD
Retailer 10$5,281 USD
Retailer 15$5,815 USD
Retailer 4$6,685 USD
Retailer 6$7,101 USD
Retailer 2$8,300 USD
Taylor and Hart$8,675 USD

20 data points across 17 retailers

18 retailers$2,073 USD to $8,675 USD

A
Cheapest Retailer
-
$2,073 USD
£1,632 GBP
A
Retailer 2
-
$2,395 USD
View
Final sale: no returns
Retailer 3
-
$2,415 USD
View
Price last confirmed 19 days ago
A
Retailer 4
-
$2,530 USD
View
A
Retailer 5
-
$2,719 USD
View
A
Retailer 6
-
$2,867 USD
HK$22,400 HKD
View
A
Retailer 7
-
$3,415 USD
£2,689 GBP
View
A
Retailer 8
-
$3,730 USD
View
A
Retailer 9
-
$3,882 USD
€3,697 EUR
View
A
Retailer 10
-
$4,079 USD
View
A
Retailer 11
-
$4,709 USD
£3,708 GBP
View
Retailer 12
-
$4,961 USD
A$7,633 AUD
View
Price last confirmed 8 days ago
A
Retailer 13
-
$5,281 USD
ZAR 85,319 ZAR
View
A
Retailer 14
-
$5,815 USD
View
A
Retailer 15
-
$6,685 USD
View
A
Retailer 16
-
$7,101 USD
£5,591 GBP
View
B+
Retailer 17
-
$8,300 USD
SGD 11,216 SGD
View
Most Expensive
B+
Taylor and Hart
AP5JNQW · Oct 30
$8,675 USD
View
17 more retailers have this diamond
Prices start from $2,073 USDSave up to $6,602 USD

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
$2,073 USD