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Cushion|Lab Grown|IGI

4.21ct F VVS1 Cushion Lab Grown Diamond

EX • F/VVS1 • IGI LG811655166

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG811655166

Diamond specifications and retailer prices

From $1,183 USD
As of October 28, 2026
Save $7,979 USD (87%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $9,162 USD at Yadav Diamonds · As of October 29, 2026
View at Yadav Diamonds

About this 4.21ct lab-grown cushion diamond

This 4.21ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VVS1 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG811655166 or 811655166. Listed at 25 retailers as of October 28, 2026, with prices from $1,183 to $9,162, a $7,979 spread on the same certified stone. Yadav Diamonds lists it at $9,162. 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

4.21
Carat
F
Color
VVS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811655166
Dimensions11.48 × 8.50 × 5.56 mm
L/W Ratio1.35
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.48 mm8.50 mm4.21 ctF / VVS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG811655166
Side View
Table 60.0%Crown 34.3°Girdle: MED-STKPavilion 38.7°Culet: NoneDepth 65.4%

Caratlytics Score

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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 28
Current: $2,823 USD|Low: $1,129 USD|High: $9,162 USD|Avg: $3,520 USD|+4.5%
Retailer 1
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Retailer 3
Retailer 4
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Retailer 7
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Retailer 15
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Retailer 17
Retailer 18
Retailer 19
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Retailer 21
Retailer 22
Yadav Diamonds
October 29, 2026
Retailer 15$1,183 USD
Retailer 4$1,201 USD
Retailer 7$1,291 USD
Retailer 22$1,320 USD
Retailer 8$1,882 USD
Retailer 12$1,911 USD
Retailer 18$1,997 USD
Retailer 9$2,093 USD
Retailer 17$2,190 USD
Retailer 1$2,823 USD
Retailer 21$2,839 USD
Retailer 6$3,223 USD
Retailer 2$3,322 USD
Retailer 5$3,510 USD
Retailer 11$3,644 USD
Retailer 14$3,658 USD
Retailer 16$3,932 USD
Retailer 20$4,266 USD
Retailer 19$4,673 USD
Retailer 3$5,633 USD
Retailer 13$7,959 USD
Retailer 10$8,130 USD
Yadav Diamonds$9,162 USD

26 data points across 23 retailers

25 retailers$1,183 USD to $9,162 USD

A
Cheapest Retailer
-
$1,183 USD
Final sale: no returns
Retailer 2
-
$1,201 USD
View
Price last confirmed 15 days ago
A
Retailer 3
-
$1,291 USD
View
A
Retailer 4
-
$1,320 USD
View
Price last confirmed 5 days ago
A
Retailer 5
-
$1,882 USD
View
A
Retailer 6
-
$1,911 USD
£1,505 GBP
View
A
Retailer 7
-
$1,997 USD
€1,902 EUR
View
B+
Retailer 8
-
$2,093 USD
View
A
Retailer 9
-
$2,190 USD
View
B+
Retailer 10
-
$2,823 USD
ZAR 45,598 ZAR
View
Retailer 11
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$2,839 USD
A$4,367 AUD
View
Price last confirmed 11 days ago
B+
Retailer 12
-
$3,223 USD
View
B
Retailer 13
-
$3,322 USD
CA$4,614 CAD
View
B+
Retailer 14
-
$3,510 USD
View
B
Retailer 15
-
$3,644 USD
View
B
Retailer 16
-
$3,658 USD
£2,880 GBP
View
B
Retailer 17
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$3,932 USD
£3,096 GBP
View
B
Retailer 18
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$4,266 USD
£3,359 GBP
View
B
Retailer 19
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$4,673 USD
View
Retailer 20
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$5,148 USD
A$7,920 AUD
View
Price last confirmed 121 days ago
Retailer 21
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$5,414 USD
View
Price last confirmed 53 days ago
B
Retailer 22
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$5,633 USD
View
B
Retailer 23
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$7,959 USD
View
B
Retailer 24
-
$8,130 USD
View
Most Expensive
B
Yadav Diamonds
13305924 · Oct 29
$9,162 USD
View
24 more retailers have this diamond
Prices start from $1,183 USDSave up to $7,979 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
4.21ct Cushion
$1,183 USD