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Marquise|Lab Grown|IGI

3.08ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG823654643

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG823654643

Diamond specifications and retailer prices

From $401 USD
As of October 29, 2026
Save $2,389 USD (86%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $2,790 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 3.08ct lab-grown marquise diamond

This 3.08ct 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 LG823654643 or 823654643. Listed at 3 retailers as of October 28, 2026, with prices from $401 to $2,790, a $2,389 spread on the same certified stone. Brilliant Earth lists it at $2,790. 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

3.08
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.6°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823654643
Dimensions15.23 × 7.53 × 4.73 mm
L/W Ratio2.02
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.23 mm7.53 mm3.08 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823654643
Side View
Table 59.0%Crown 34.6°Girdle: MED-THKPavilion 40.6°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: $2,790 USD|Low: $401 USD|High: $2,790 USD|Avg: $1,121 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
October 30, 2026
Retailer 3$401 USD
Retailer 4$677 USD
Retailer 2$831 USD
Retailer 5$1,011 USD
Brilliant Earth$2,790 USD

37 data points across 5 retailers

3 retailers$401 USD to $2,790 USD

A
Cheapest Retailer
-
$401 USD
Final sale: no returns
A
Retailer 2
-
$831 USD
£654 GBP
View
Most Expensive
B
Brilliant Earth
21237442A · Oct 28
$2,790 USD
View
2 more retailers have this diamond
Prices start from $401 USDSave up to $2,389 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
3.08ct Marquise
$401 USD