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Marquise|Lab Grown|IGI

3.10ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG844601584

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG844601584

Diamond specifications and retailer prices

From $384 USD
As of October 29, 2026
Save $4,296 USD (92%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $4,680 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 3.1ct lab-grown marquise diamond

This 3.1ct 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 LG844601584 or 844601584. Listed at 4 retailers as of October 28, 2026, with prices from $384 to $4,680, a $4,296 spread on the same certified stone. Brilliant Earth lists it at $4,680. 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

3.10
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.9°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844601584
Dimensions15.00 × 7.51 × 4.80 mm
L/W Ratio2.00
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.00 mm7.51 mm3.10 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844601584
Side View
Table 62.0%Crown 37.9°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 63.9%

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: $4,680 USD|Low: $384 USD|High: $4,680 USD|Avg: $2,197 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
October 29, 2026
Retailer 4$384 USD
Retailer 2$790 USD
Retailer 3$2,780 USD
Brilliant Earth$4,680 USD

17 data points across 4 retailers

4 retailers$384 USD to $4,680 USD

A
Cheapest Retailer
-
$384 USD
Final sale: no returns
A
Retailer 2
-
$790 USD
£622 GBP
View
B
Retailer 3
-
$2,780 USD
View
Most Expensive
B
Brilliant Earth
21816124A · Oct 28
$4,680 USD
View
3 more retailers have this diamond
Prices start from $384 USDSave up to $4,296 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
3.10ct Marquise
$384 USD