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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 €353 EUR
$394 USD
As of October 29, 2026
Save €1,460 EUR (81%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €1,813 EUR 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 €353 to €1,813, a €1,460 spread on the same certified stone. Rare Carat lists it at €1,813. 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
Color
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: €2,302 EUR|Low: €353 EUR|High: €4,550 EUR|Avg: €1,310 EUR
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
November 1, 2026
Retailer 11€353 EUR
Retailer 6€395 EUR
Retailer 5€437 EUR
Retailer 15€481 EUR
Retailer 12€568 EUR
Retailer 2€584 EUR
Retailer 3€694 EUR
Retailer 13€695 EUR
Retailer 9€709 EUR
Retailer 14€738 EUR
Retailer 16€1,065 EUR
Retailer 10€1,226 EUR
Retailer 4€1,405 EUR
Rare Carat€2,302 EUR
Retailer 8€3,473 EUR
Retailer 7€4,550 EUR

6 data points across 16 retailers

14 retailers€353 EUR to €1,813 EUR

A
Cheapest Retailer
-
€353 EUR
$394 USD
A
Retailer 2
-
€395 EUR
$441 USD
View
A
Retailer 3
-
€437 EUR
$488 USD
View
A
Retailer 4
-
€481 EUR
HK$4,200 HKD
View
A
Retailer 5
-
€568 EUR
$635 USD
View
A
Retailer 6
-
€584 EUR
£514 GBP
View
B+
Retailer 7
-
€694 EUR
$775 USD
View
A
Retailer 8
-
€695 EUR
View
A
Retailer 9
-
€709 EUR
£624 GBP
View
A
Retailer 10
-
€738 EUR
$824 USD
View
B+
Retailer 11
-
€1,065 EUR
$1,190 USD
View
B+
Retailer 12
-
€1,226 EUR
$1,370 USD
View
B+
Retailer 13
-
€1,405 EUR
$1,570 USD
View
Most Expensive
B
Rare Carat
KI2794012KF666 · Oct 28
€1,813 EUR
$2,025 USD
View
13 more retailers have this diamond
Prices start from €353 EURSave up to €1,460 EUR

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
€353 EUR