Marquise|Lab Grown|IGI

3.06ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG842651418

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG842651418

Diamond specifications and retailer prices

From $399 USD
As of October 29, 2026
Save $2,371 USD (86%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $2,770 USD at Brilliant Earth · As of October 26, 2026
View at Brilliant Earth

About this 3.06ct lab-grown marquise diamond

This 3.06ct lab-grown marquise 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 LG842651418 or 842651418. Listed at 4 retailers as of October 26, 2026, with prices from $399 to $2,770, a $2,371 spread on the same certified stone. Brilliant Earth lists it at $2,770. 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

3.06
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.8°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG842651418
Dimensions15.24 × 7.37 × 4.76 mm
L/W Ratio2.07
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.24 mm7.37 mm3.06 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG842651418
Side View
Table 61.0%Crown 37.8°Girdle: MED-STKPavilion 40.7°Culet: NoneDepth 64.6%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: $2,770 USD|Low: $399 USD|High: $2,770 USD|Avg: $1,735 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
October 26, 2026
Retailer 3$399 USD
Retailer 2$812 USD
Retailer 4$2,165 USD
Brilliant Earth$2,770 USD

17 data points across 4 retailers

4 retailers$399 USD to $2,770 USD

A
Cheapest Retailer
-
$399 USD
Final sale: no returns
A
Retailer 2
-
$812 USD
£640 GBP
View
Retailer 3
-
$2,165 USD
View
Price last confirmed 16 days ago
Most Expensive
B
Brilliant Earth
21744584A · Oct 26
$2,770 USD
View
3 more retailers have this diamond
Prices start from $399 USDSave up to $2,371 USD

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
3.06ct Marquise
$399 USD