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Cushion|Lab Grown|IGI

4.21ct D FL Cushion Lab Grown Diamond

VG • D/FL • IGI LG784642485

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

Certificate IGI LG784642485

Diamond specifications and retailer prices

From $5,208 SGD
$4,074 USD
As of October 30, 2026
Save $27,289 SGD (84%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $32,497 SGD at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 4.21ct lab-grown cushion diamond

This 4.21ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a very-good cut grade and certified by IGI LG784642485 or 784642485. Listed at 11 retailers as of October 30, 2026, with prices from $5,208 to $32,497, a $27,289 spread on the same certified stone. Do Amore Diamonds lists it at $32,497. 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
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784642485
Dimensions9.24 × 9.21 × 6.34 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
9.24 mm9.21 mm4.21 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784642485
Side View
Table 61.0%Crown 37.2°Girdle: STK-THKPavilion 39°Culet: NoneDepth 68.8%

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: $32,497 SGD|Low: $5,208 SGD|High: $41,637 SGD|Avg: $13,794 SGD|-22.0%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 3$5,208 SGD
Retailer 6$5,676 SGD
Retailer 5$5,941 SGD
Retailer 10$7,192 SGD
Retailer 8$8,554 SGD
Retailer 2$10,369 SGD
Retailer 9$10,432 SGD
Retailer 7$13,026 SGD
Retailer 4$16,683 SGD
Do Amore Diamonds$32,497 SGD

28 data points across 10 retailers

11 retailers$5,208 SGD to $32,497 SGD

A
Cheapest Retailer
-
$5,208 SGD
$4,074 USD
A
Retailer 2
-
$5,676 SGD
$4,440 USD
View
A
Retailer 3
-
$5,941 SGD
$4,647 USD
View
A
Retailer 4
-
$7,192 SGD
$5,626 USD
View
Final sale: no returns
A
Retailer 5
-
$8,554 SGD
$6,691 USD
View
A
Retailer 6
-
$10,369 SGD
€7,725 EUR
View
Retailer 7
-
$10,432 SGD
$8,160 USD
View
Price last confirmed 12 days ago
B+
Retailer 8
-
$13,026 SGD
£8,023 GBP
View
B+
Retailer 9
-
$16,683 SGD
$13,050 USD
View
B
Retailer 10
-
$25,597 SGD
$20,023 USD
View
Most Expensive
B
Do Amore Diamonds
27-36DC3358C · Oct 31
$32,497 SGD
$25,420 USD
View
10 more retailers have this diamond
Prices start from $5,208 SGDSave up to $27,289 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
4.21ct Cushion
$5,208 SGD