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Marquise|Lab Grown|IGI

3.25ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG841639173

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG841639173

Diamond specifications and retailer prices

From $395 USD
As of October 29, 2026
Save $4,515 USD (92%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $4,910 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

About this 3.25ct lab-grown marquise diamond

This 3.25ct 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 LG841639173 or 841639173. Listed at 3 retailers as of October 28, 2026, with prices from $395 to $4,910, a $4,515 spread on the same certified stone. Brilliant Earth lists it at $4,910. 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

3.25
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG841639173
Dimensions14.54 × 7.74 × 5.00 mm
L/W Ratio1.88
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.54 mm7.74 mm3.25 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG841639173
Side View
Table 62.0%Crown 38°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 64.6%

Caratlytics Score

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

Last verified: Oct 29
Current: $4,910 USD|Low: $395 USD|High: $4,910 USD|Avg: $2,480 USD
Brilliant Earth
Retailer 2
Retailer 3
October 29, 2026
Retailer 3$395 USD
Retailer 2$819 USD
Brilliant Earth$4,910 USD

25 data points across 3 retailers

3 retailers$395 USD to $4,910 USD

A
Cheapest Retailer
-
$395 USD
Final sale: no returns
A
Retailer 2
-
$819 USD
£645 GBP
View
Most Expensive
B
Brilliant Earth
21706310A · Oct 28
$4,910 USD
View
2 more retailers have this diamond
Prices start from $395 USDSave up to $4,515 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
3.25ct Marquise
$395 USD