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Marquise|Lab Grown|IGI

3.06ct E SI1 Marquise Lab Grown Diamond

ID • E/SI1 • IGI LG607311016

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG607311016

Diamond specifications and retailer prices

From $2,950 USD
As of October 28, 2026
1 retailer carries this diamond
Only listing: $2,950 USD at Brilliant Earth
Only one retailer lists this diamond right now, and it is shown above, so there is nothing to unlock. Similar diamonds are carried by several retailers.
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 LG607311016 or 607311016. Listed at a single retailer as of October 28, 2026. If it later appears at another store, Carat Hunter will surface the price comparison automatically. 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG607311016
Dimensions14.76 × 7.74 × 4.74 mm
L/W Ratio1.91
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
14.76 mm7.74 mm3.06 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG607311016
Side View
Table 59.0%Crown 35.1°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 61.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 28
Current: $2,950 USD|Low: $292 USD|High: $5,010 USD|Avg: $1,464 USD|-38.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
August 14, 2026
Retailer 3$618 USD
Retailer 7$742 USD
Retailer 8$755 USD
Retailer 4$806 USD
Retailer 2$1,001 USD
Retailer 6$1,002 USD
Retailer 5$2,369 USD
Brilliant Earth$2,950 USD

81 data points across 8 retailers

1 retailer

B
Brilliant Earth
8753758A · Oct 28
$2,950 USD
View

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.

B
3.06ct Marquise
$2,950 USD