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3.81ct F SI1 Round Lab Grown Diamond

EX • F/SI1 • IGI LG828668903

Shape and cutting style on the report: Round brilliant

Certificate IGI LG828668903

Diamond specifications and retailer prices

From $688 NZD
$387 USD
As of November 1, 2026
Save $2,893 NZD (81%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $3,581 NZD at Rare Carat · As of October 28, 2026
View at Rare Carat

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 LG828668903 or 828668903. Listed at 8 retailers as of October 28, 2026, with prices from $688 to $3,581, a $2,893 spread on the same certified stone. Rare Carat lists it at $3,581. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.2°
Pavilion angle41.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG828668903
Dimensions10.07 × 10.05 × 6.07 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.07 mm10.05 mm3.81 ctF / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG828668903
Side View
Table 61.0%Crown 33.2°Girdle: MED-STKPavilion 41.2°Culet: NoneDepth 60.3%

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: Nov 1
Current: $3,581 NZD|Low: $688 NZD|High: $3,635 NZD|Avg: $2,134 NZD|-1.5%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 9$688 NZD
Retailer 7$770 NZD
Retailer 5$1,193 NZD
Retailer 3$1,360 NZD
Retailer 6$2,392 NZD
Retailer 4$2,399 NZD
Retailer 8$2,741 NZD
Retailer 2$3,332 NZD
Rare Carat$3,581 NZD

21 data points across 9 retailers

8 retailers$688 NZD to $3,581 NZD

A
Cheapest Retailer
-
$688 NZD
$387 USD
A
Retailer 2
-
$770 NZD
$433 USD
View
A
Retailer 3
-
$1,360 NZD
€729 EUR
View
B+
Retailer 4
-
$2,392 NZD
$1,346 USD
View
B+
Retailer 5
-
$2,399 NZD
$1,350 USD
View
B+
Retailer 6
-
$2,741 NZD
$1,542 USD
View
B+
Retailer 7
-
$3,332 NZD
£1,476 GBP
View
Most Expensive
B
Rare Carat
LGRD30-137515 · Oct 28
$3,581 NZD
$2,015 USD
View
7 more retailers have this diamond
Prices start from $688 NZDSave up to $2,893 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.

A
3.81ct Round
$688 NZD