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Round|Lab Grown|IGI

3.81ct F SI1 Round Lab Grown Diamond

ID • F/SI1 • IGI LG634488326

Shape and cutting style on the report: Round brilliant

Certificate IGI LG634488326

Diamond specifications and retailer prices

From $1,709 SGD
CA$1,856 CAD
As of November 2, 2026
Save $552 SGD (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $2,261 SGD at The Diamond Guys · As of November 1, 2026
View at The Diamond Guys

About this 3.81ct lab-grown round diamond

This 3.81ct lab-grown round sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG634488326 or 634488326. Listed at 2 retailers as of November 1, 2026, with prices from $1,709 to $2,261, a $552 spread on the same certified stone. The Diamond Guys lists it at $2,261. 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

3.81
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG634488326
Dimensions10.09 × 10.02 × 6.11 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
10.09 mm10.02 mm3.81 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG634488326
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 60.8%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Nov 2
Current: $1,412 SGD|Low: $340 SGD|High: $5,013 SGD|Avg: $1,800 SGD|-9.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
The Diamond Guys
August 3, 2026
Retailer 4$928 SGD
Retailer 6$1,000 SGD
Retailer 9$1,131 SGD
Retailer 11$1,143 SGD
Retailer 8$1,381 SGD
Retailer 5$1,400 SGD
Retailer 1$1,412 SGD
Retailer 7$1,709 SGD
Retailer 3$2,219 SGD
The Diamond Guys$2,261 SGD
Retailer 12$3,018 SGD
Retailer 10$3,530 SGD
Retailer 2$4,246 SGD

60 data points across 13 retailers

2 retailers$1,709 SGD to $2,261 SGD

B+
Cheapest Retailer
-
$1,709 SGD
CA$1,856 CAD
Most Expensive
B
The Diamond Guys
1954434349 · Nov 1
$2,261 SGD
$1,768 USD
View
1 more retailer has this diamond
Prices start from $1,709 SGDSave up to $552 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.

B+
3.81ct Round
$1,709 SGD