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Round|Lab Grown|IGI

3.71ct E SI1 Round Lab Grown Diamond

ID • E/SI1 • IGI LG666401279

Shape and cutting style on the report: Round brilliant

Certificate IGI LG666401279

Diamond specifications and retailer prices

From $561 AUD
$394 USD
As of October 29, 2026
Save $2,322 AUD (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $2,883 AUD at Rare Carat · As of October 28, 2026
View at Rare Carat

About this 3.71ct lab-grown round diamond

This 3.71ct lab-grown round sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG666401279 or 666401279. Listed at 14 retailers as of October 28, 2026, with prices from $561 to $2,883, a $2,322 spread on the same certified stone. Rare Carat lists it at $2,883. 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

3.71
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG666401279
Dimensions9.93 × 9.97 × 6.08 mm
L/W Ratio1.00
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.93 mm9.97 mm3.71 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG666401279
Side View
Table 57.0%Crown 34.6°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.1%

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: Oct 29
Current: $3,662 AUD|Low: $561 AUD|High: $7,236 AUD|Avg: $2,164 AUD
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
October 30, 2026
Retailer 11$561 AUD
Retailer 6$628 AUD
Retailer 5$695 AUD
Retailer 15$765 AUD
Retailer 12$904 AUD
Retailer 9$932 AUD
Retailer 3$1,103 AUD
Retailer 13$1,106 AUD
Retailer 10$1,137 AUD
Retailer 14$1,173 AUD
Retailer 16$1,694 AUD
Retailer 2$1,950 AUD
Retailer 4$2,235 AUD
Rare Carat$3,662 AUD
Retailer 8$5,524 AUD
Retailer 7$7,236 AUD

4 data points across 16 retailers

14 retailers$561 AUD to $2,883 AUD

A
Cheapest Retailer
-
$561 AUD
$394 USD
A
Retailer 2
-
$628 AUD
$441 USD
View
A
Retailer 3
-
$695 AUD
$488 USD
View
A
Retailer 4
-
$765 AUD
HK$4,200 HKD
View
A
Retailer 5
-
$904 AUD
$635 USD
View
A
Retailer 6
-
$932 AUD
£515 GBP
View
B+
Retailer 7
-
$1,103 AUD
$775 USD
View
A
Retailer 8
-
$1,106 AUD
€740 EUR
View
A
Retailer 9
-
$1,137 AUD
£629 GBP
View
A
Retailer 10
-
$1,173 AUD
$824 USD
View
B+
Retailer 11
-
$1,694 AUD
$1,190 USD
View
B+
Retailer 12
-
$1,950 AUD
$1,370 USD
View
B+
Retailer 13
-
$2,235 AUD
$1,570 USD
View
Most Expensive
B
Rare Carat
KI2794012KF666 · Oct 28
$2,883 AUD
$2,025 USD
View
13 more retailers have this diamond
Prices start from $561 AUDSave up to $2,322 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
3.71ct Round
$561 AUD