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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 $2,376 NZD
CA$1,856 CAD
As of November 2, 2026
Save $767 NZD (24%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $3,142 NZD 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 $2,376 to $3,142, a $767 spread on the same certified stone. The Diamond Guys lists it at $3,142. 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: $1,962 NZD|Low: $473 NZD|High: $6,967 NZD|Avg: $2,502 NZD|-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$1,290 NZD
Retailer 6$1,389 NZD
Retailer 9$1,571 NZD
Retailer 11$1,589 NZD
Retailer 8$1,919 NZD
Retailer 5$1,946 NZD
Retailer 1$1,962 NZD
Retailer 7$2,376 NZD
Retailer 3$3,084 NZD
The Diamond Guys$3,142 NZD
Retailer 12$4,194 NZD
Retailer 10$4,905 NZD
Retailer 2$5,901 NZD

60 data points across 13 retailers

2 retailers$2,376 NZD to $3,142 NZD

B+
Cheapest Retailer
-
$2,376 NZD
CA$1,856 CAD
Most Expensive
B
The Diamond Guys
1954434349 · Nov 1
$3,142 NZD
$1,768 USD
View
1 more retailer has this diamond
Prices start from $2,376 NZDSave up to $767 NZD

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
$2,376 NZD