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Marquise|Lab Grown|IGI

3.03ct G SI1 Marquise Lab Grown Diamond

EX • G/SI1 • IGI LG837697921

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG837697921

Diamond specifications and retailer prices

From $376 USD
As of November 1, 2026
Save $405 USD (52%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: $781 USD at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 3.03ct lab-grown marquise diamond

This 3.03ct lab-grown marquise sits in the three to five carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG837697921 or 837697921. Listed at 2 retailers as of November 1, 2026, with prices from $376 to $781, a $405 spread on the same certified stone. 77 Diamonds lists it at $781. 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

3.03
Carat
G
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle41.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG837697921
Dimensions15.42 × 7.54 × 4.74 mm
L/W Ratio2.05
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.42 mm7.54 mm3.03 ctG / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG837697921
Side View
Table 61.0%Crown 34.3°Girdle: MED-STKPavilion 41.3°Culet: NoneDepth 62.9%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $781 USD|Low: $376 USD|High: $866 USD|Avg: $689 USD|-6.4%
77 Diamonds
Retailer 2
November 2, 2026
Retailer 2$376 USD
77 Diamonds$781 USD

33 data points across 2 retailers

2 retailers$376 USD to $781 USD

A
Cheapest Retailer
-
$376 USD
Final sale: no returns
Most Expensive
B+
77 Diamonds
MQTVSBSMZDZTP · Nov 2
$781 USD
£615 GBP
View
1 more retailer has this diamond
Prices start from $376 USDSave up to $405 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
3.03ct Marquise
$376 USD