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Marquise|Lab Grown|IGI

3.06ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG838625178

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG838625178

Diamond specifications and retailer prices

From $404 USD
As of October 29, 2026
Save $430 USD (52%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $834 USD at 77 Diamonds · As of October 30, 2026
View at 77 Diamonds

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 LG838625178 or 838625178. Listed at 2 retailers as of October 29, 2026, with prices from $404 to $834, a $430 spread on the same certified stone. 77 Diamonds lists it at $834. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle41°
OriginLab Grown
Grading LabIGI
CertificateIGI LG838625178
Dimensions14.59 × 7.53 × 4.86 mm
L/W Ratio1.94
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.59 mm7.53 mm3.06 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG838625178
Side View
Table 61.0%Crown 37.2°Girdle: MED-STKPavilion 41°Culet: NoneDepth 64.5%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 29
Current: $834 USD|Low: $404 USD|High: $877 USD|Avg: $732 USD|-4.2%
77 Diamonds
Retailer 2
October 30, 2026
Retailer 2$404 USD
77 Diamonds$834 USD

31 data points across 2 retailers

2 retailers$404 USD to $834 USD

A
Cheapest Retailer
-
$404 USD
Final sale: no returns
Most Expensive
B+
77 Diamonds
MQTVSSGVYYWHZ · Oct 30
$834 USD
£657 GBP
View
1 more retailer has this diamond
Prices start from $404 USDSave up to $430 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
3.06ct Marquise
$404 USD