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Cushion|Lab Grown|IGI

4.21ct F VVS1 Cushion Lab Grown Diamond

VG • F/VVS1 • IGI LG835670909

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG835670909

Diamond specifications and retailer prices

From €1,059 EUR
$1,183 USD
As of November 1, 2026
Save €7,489 EUR (88%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €8,548 EUR at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

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 very-good cut grade and certified by IGI LG835670909 or 835670909. Listed at 19 retailers as of October 31, 2026, with prices from €1,059 to €8,548, a €7,489 spread on the same certified stone. Brilliant Earth lists it at €8,548. 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

4.21
Carat
F
Color
VVS1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.6°
Pavilion angle28.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG835670909
Dimensions9.35 × 9.05 × 5.65 mm
L/W Ratio1.03
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.35 mm9.05 mm4.21 ctF / VVS1
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG835670909
Side View
Table 65.0%Crown 38.6°Girdle: STK-THKPavilion 28.6°Culet: NoneDepth 62.4%

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: Nov 1
Current: €8,548 EUR|Low: €1,059 EUR|High: €8,548 EUR|Avg: €2,831 EUR|+19.1%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 2, 2026
Retailer 7€1,059 EUR
Retailer 13€1,200 EUR
Retailer 15€1,231 EUR
Retailer 10€1,352 EUR
Retailer 3€1,564 EUR
Retailer 11€1,685 EUR
Retailer 12€1,721 EUR
Retailer 6€1,960 EUR
Retailer 17€2,526 EUR
Retailer 14€2,543 EUR
Retailer 9€3,142 EUR
Retailer 5€3,262 EUR
Retailer 19€3,274 EUR
Retailer 2€3,507 EUR
Retailer 18€3,834 EUR
Retailer 16€4,183 EUR
Retailer 8€7,124 EUR
Retailer 4€7,277 EUR
Brilliant Earth€8,548 EUR

31 data points across 19 retailers

19 retailers€1,059 EUR to €8,548 EUR

A
Cheapest Retailer
-
€1,059 EUR
$1,183 USD
Final sale: no returns
A
Retailer 2
-
€1,200 EUR
£1,056 GBP
View
A
Retailer 3
-
€1,231 EUR
$1,375 USD
View
A
Retailer 4
-
€1,352 EUR
$1,510 USD
View
A
Retailer 5
-
€1,407 EUR
$1,572 USD
View
B+
Retailer 6
-
€1,685 EUR
$1,882 USD
View
B+
Retailer 7
-
€1,721 EUR
£1,514 GBP
View
B+
Retailer 8
-
€1,960 EUR
$2,190 USD
View
B+
Retailer 9
-
€2,526 EUR
ZAR 45,598 ZAR
View
B+
Retailer 10
-
€2,543 EUR
A$4,371 AUD
View
B
Retailer 11
-
€3,142 EUR
$3,510 USD
View
B
Retailer 12
-
€3,262 EUR
$3,644 USD
View
B
Retailer 13
-
€3,274 EUR
£2,880 GBP
View
B
Retailer 14
-
€3,507 EUR
£3,085 GBP
View
B
Retailer 15
-
€3,834 EUR
£3,373 GBP
View
B
Retailer 16
-
€4,183 EUR
$4,673 USD
View
B
Retailer 17
-
€7,124 EUR
$7,959 USD
View
B
Retailer 18
-
€7,277 EUR
$8,130 USD
View
Most Expensive
B
Brilliant Earth
22270103A · Oct 31
€8,548 EUR
$9,550 USD
View
18 more retailers have this diamond
Prices start from €1,059 EURSave up to €7,489 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
4.21ct Cushion
€1,059 EUR