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Cushion|Lab Grown|IGI

4.09ct F VS1 Cushion Lab Grown Diamond

EX • F/VS1 • IGI LG816617452

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

Certificate IGI LG816617452

Diamond specifications and retailer prices

From $674 SGD
£415 GBP
As of November 2, 2026
Save $4,848 SGD (88%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $5,523 SGD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 4.09ct lab-grown cushion diamond

This 4.09ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG816617452 or 816617452. Listed at 14 retailers as of October 31, 2026, with prices from $674 to $5,523, a $4,848 spread on the same certified stone. Brilliant Earth lists it at $5,523. 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

4.09
Carat
F
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle45.7°
Pavilion angle30.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816617452
Dimensions9.06 × 8.52 × 5.71 mm
L/W Ratio1.06
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.06 mm8.52 mm4.09 ctF / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816617452
Side View
Table 65.0%Crown 45.7°Girdle: STK-THKPavilion 30.3°Culet: NoneDepth 67.0%

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 2
Current: $5,523 SGD|Low: $674 SGD|High: $9,524 SGD|Avg: $2,636 SGD|-42.0%
Brilliant Earth
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
November 2, 2026
Retailer 2$674 SGD
Retailer 11$984 SGD
Retailer 3$1,084 SGD
Retailer 8$1,230 SGD
Retailer 12$1,318 SGD
Retailer 7$1,346 SGD
Retailer 10$1,619 SGD
Retailer 14$2,016 SGD
Retailer 13$2,557 SGD
Retailer 4$2,629 SGD
Retailer 9$2,821 SGD
Retailer 5$3,418 SGD
Retailer 6$3,944 SGD
Brilliant Earth$5,523 SGD

42 data points across 14 retailers

14 retailers$674 SGD to $5,523 SGD

A
Cheapest Retailer
-
$674 SGD
£415 GBP
A
Retailer 2
-
$984 SGD
$770 USD
View
B+
Retailer 3
-
$1,084 SGD
$848 USD
View
A
Retailer 4
-
$1,230 SGD
€916 EUR
View
A
Retailer 5
-
$1,318 SGD
$1,031 USD
View
A
Retailer 6
-
$1,346 SGD
£829 GBP
View
A
Retailer 7
-
$1,619 SGD
A$1,948 AUD
View
A
Retailer 8
-
$2,016 SGD
$1,577 USD
View
B+
Retailer 9
-
$2,557 SGD
View
B+
Retailer 10
-
$2,629 SGD
$2,056 USD
View
B+
Retailer 11
-
$2,821 SGD
$2,207 USD
View
B+
Retailer 12
-
$3,418 SGD
£2,105 GBP
View
Retailer 13
-
$3,944 SGD
$3,085 USD
View
Price last confirmed 25 days ago
Most Expensive
B
Brilliant Earth
22374626A · Oct 31
$5,523 SGD
$4,320 USD
View
13 more retailers have this diamond
Prices start from $674 SGDSave up to $4,848 SGD

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
4.09ct Cushion
$674 SGD