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Round|Lab Grown|IGI

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 $552 AUD
$387 USD
As of November 1, 2026
Save $2,323 AUD (81%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $2,875 AUD 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 $552 to $2,875, a $2,323 spread on the same certified stone. Rare Carat lists it at $2,875. 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: $2,875 AUD|Low: $552 AUD|High: $2,918 AUD|Avg: $1,714 AUD|-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$552 AUD
Retailer 7$618 AUD
Retailer 5$957 AUD
Retailer 3$1,092 AUD
Retailer 6$1,921 AUD
Retailer 4$1,926 AUD
Retailer 8$2,200 AUD
Retailer 2$2,675 AUD
Rare Carat$2,875 AUD

21 data points across 9 retailers

8 retailers$552 AUD to $2,875 AUD

A
Cheapest Retailer
-
$552 AUD
$387 USD
A
Retailer 2
-
$618 AUD
$433 USD
View
A
Retailer 3
-
$1,092 AUD
€729 EUR
View
B+
Retailer 4
-
$1,921 AUD
$1,346 USD
View
B+
Retailer 5
-
$1,926 AUD
$1,350 USD
View
B+
Retailer 6
-
$2,200 AUD
$1,542 USD
View
B+
Retailer 7
-
$2,675 AUD
£1,476 GBP
View
Most Expensive
B
Rare Carat
LGRD30-137515 · Oct 28
$2,875 AUD
$2,015 USD
View
7 more retailers have this diamond
Prices start from $552 AUDSave up to $2,323 AUD

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
$552 AUD