Cushion|Lab Grown|IGI

4.20ct F VVS1 Cushion Lab Grown Diamond

VG • F/VVS1 • IGI LG834617490

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG834617490

Diamond specifications and retailer prices

From $1,033 USD
£813 GBP
As of October 27, 2026
Save $3,843 USD (79%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,505 USD at Rare Carat · As of October 19, 2026
View at Rare Carat

About this 4.2ct lab-grown cushion diamond

This 4.2ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VVS1 clarity (very-very-slightly-included), with a very-good cut grade and certified by IGI LG834617490 or 834617490. Listed at 14 retailers as of October 27, 2026, with a 372% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

4.20
Carat
F
Color
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle41.3°
Pavilion angle34.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG834617490
Dimensions11.28 × 8.08 × 5.50 mm
L/W Ratio1.40
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.28 mm8.08 mm4.20 ctF / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG834617490
Side View
Table 67.0%Crown 41.3°Girdle: STK-THKPavilion 34.6°Culet: NoneDepth 68.1%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 27
Current: $5,505 USD|Low: $983 USD|High: $5,565 USD|Avg: $2,719 USD|-1.1%
Rare Carat
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
October 27, 2026
Retailer 13$983 USD
Retailer 5$1,025 USD
Retailer 8$1,033 USD
Retailer 15$1,195 USD
Retailer 12$1,458 USD
Retailer 2$1,545 USD
Retailer 10$1,556 USD
Retailer 3$2,154 USD
Retailer 4$2,194 USD
Retailer 6$3,208 USD
Retailer 11$3,820 USD
Retailer 14$4,001 USD
Retailer 9$4,876 USD
Retailer 7$5,127 USD
Rare Carat$5,505 USD

35 data points across 15 retailers

14 retailers$1,033 USD to $4,876 USD

Retailer 1
-
$1,025 USD
Price last confirmed 15 days ago
A
Retailer 2
-
$1,033 USD
£813 GBP
View
A
Retailer 3
-
$1,195 USD
View
A
Retailer 4
-
$1,458 USD
View
A
Retailer 5
-
$1,545 USD
€1,471 EUR
View
A
Retailer 6
-
$1,556 USD
£1,225 GBP
View
Retailer 7
-
$2,154 USD
ZAR 34,798 ZAR
View
Price last confirmed 8 days ago
Retailer 8
-
$2,194 USD
A$3,376 AUD
View
Price last confirmed 11 days ago
B
Retailer 9
-
$3,208 USD
View
B
Retailer 10
-
$3,820 USD
£3,008 GBP
View
B
Retailer 11
-
$4,001 USD
SGD 5,407 SGD
View
B
Retailer 12
-
$4,876 USD
View
Retailer 13
-
$5,127 USD
A$7,887 AUD
View
Price last confirmed 24 days ago
Most Expensive
Rare Carat
CN265-21A · Oct 19
$5,505 USD
View
Price last confirmed 14 days ago
13 more retailers have this diamond
Prices start from $1,033 USDSave up to $3,843 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
$1,033 USD