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Round|Lab Grown|IGI

4.20ct D IF Round Lab Grown Diamond

ID • D/IF • IGI LG807639396

Shape and cutting style on the report: Round brilliant

Certificate IGI LG807639396

Diamond specifications and retailer prices

From $4,073 SGD
£2,502 GBP
As of October 29, 2026
Save $6,330 SGD (61%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $10,403 SGD at Taylor and Hart · As of October 27, 2026
View at Taylor and Hart

About this 4.2ct lab-grown round diamond

This 4.2ct lab-grown round sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG807639396 or 807639396. Listed at 7 retailers as of October 27, 2026, with prices from $4,073 to $10,403, a $6,330 spread on the same certified stone. Taylor and Hart lists it at $10,403. 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

4.20
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.1°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG807639396
Dimensions10.44 × 10.40 × 6.35 mm
L/W Ratio1.00
Girdle conditionFaceted
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
10.44 mm10.40 mm4.20 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG807639396
Side View
Table 58.0%Crown 33.1°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 60.9%

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 29
Current: $4,073 SGD|Low: $3,478 SGD|High: $13,783 SGD|Avg: $6,060 SGD|-22.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Taylor and Hart
October 29, 2026
Retailer 6$3,478 SGD
Retailer 1$4,073 SGD
Retailer 4$4,249 SGD
Retailer 3$4,638 SGD
Retailer 5$6,037 SGD
Retailer 2$8,536 SGD
Taylor and Hart$10,403 SGD

31 data points across 7 retailers

7 retailers$4,073 SGD to $10,403 SGD

A
Retailer 1
-
$3,478 SGD
HK$21,200 HKD
Price last confirmed 38 days ago
A
Retailer 2
-
$4,073 SGD
£2,502 GBP
View
A
Retailer 3
-
$4,249 SGD
$3,315 USD
View
A
Retailer 4
-
$4,638 SGD
€3,446 EUR
View
A
Retailer 5
-
$6,037 SGD
$4,710 USD
View
B+
Retailer 6
-
$8,536 SGD
£5,244 GBP
View
Most Expensive
B+
Taylor and Hart
76D2FDW · Oct 27
$10,403 SGD
$8,117 USD
View
6 more retailers have this diamond
Prices start from $4,073 SGDSave up to $6,330 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
4.20ct Round
$4,073 SGD