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Round|Lab Grown|IGI

3.78ct F SI2 Round Lab Grown Diamond

ID • F/SI2 • IGI LG620446215

Shape and cutting style on the report: Round brilliant

Certificate IGI LG620446215

Diamond specifications and retailer prices

From $5,978 SGD
$4,680 USD
As of November 5, 2026
1 retailer carries this diamond
Only listing: $5,978 SGD at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
View at Brilliant Earth

About this 3.78ct lab-grown round diamond

This 3.78ct lab-grown round sits in the three to five carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG620446215 or 620446215. Listed at a single retailer as of November 5, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.78
Carat
F
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG620446215
Dimensions10.08 × 9.99 × 6.04 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
10.08 mm9.99 mm3.78 ctF / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG620446215
Side View
Table 59.0%Crown 33.3°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.3%

Caratlytics Score

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C
Average
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Price History

Last verified: Nov 5
Current: $5,978 SGD|Low: $1,069 SGD|High: $5,978 SGD|Avg: $2,714 SGD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
May 9, 2026
Retailer 4$1,069 SGD
Retailer 2$1,271 SGD
Retailer 3$1,360 SGD
Retailer 5$1,811 SGD
Retailer 8$1,890 SGD
Retailer 7$2,397 SGD
Retailer 6$2,989 SGD
Brilliant Earth$5,978 SGD

49 data points across 8 retailers

1 retailer

C
Brilliant Earth
9278630Y · Nov 5
$5,978 SGD
$4,680 USD
View

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C
3.78ct Round
$5,978 SGD