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Marquise|Lab Grown|IGI

3.19ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG844675505

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG844675505

Diamond specifications and retailer prices

From $399 USD
As of October 29, 2026
Save $4,421 USD (92%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $4,820 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 3.19ct lab-grown marquise diamond

This 3.19ct 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 LG844675505 or 844675505. Listed at 3 retailers as of October 28, 2026, with prices from $399 to $4,820, a $4,421 spread on the same certified stone. Brilliant Earth lists it at $4,820. 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

3.19
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.7°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844675505
Dimensions14.93 × 7.85 × 4.84 mm
L/W Ratio1.90
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.93 mm7.85 mm3.19 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844675505
Side View
Table 62.0%Crown 35.7°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 61.7%

Caratlytics Score

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

Last verified: Oct 29
Current: $823 USD|Low: $399 USD|High: $872 USD|Avg: $681 USD|+1.3%
Retailer 1
Retailer 2
October 30, 2026
Retailer 2$399 USD
Retailer 1$823 USD

15 data points across 2 retailers

3 retailers$399 USD to $4,820 USD

A
Cheapest Retailer
-
$399 USD
Final sale: no returns
A
Retailer 2
-
$823 USD
£648 GBP
View
Most Expensive
B
Brilliant Earth
22003146A · Oct 28
$4,820 USD
View
2 more retailers have this diamond
Prices start from $399 USDSave up to $4,421 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
3.19ct Marquise
$399 USD