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Marquise|Lab Grown|IGI

3.07ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG839603704

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG839603704

Diamond specifications and retailer prices

From $562 AUD
$395 USD
As of October 31, 2026
Save $605 AUD (52%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $3,061 AUD at Rare Carat · As of October 21, 2026
View at Rare Carat

About this 3.07ct lab-grown marquise diamond

This 3.07ct 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 LG839603704 or 839603704. Listed at 3 retailers as of October 31, 2026, with a 108% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.07
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.5°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG839603704
Dimensions14.76 × 7.49 × 4.81 mm
L/W Ratio1.97
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.76 mm7.49 mm3.07 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG839603704
Side View
Table 63.0%Crown 37.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 64.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Oct 31
Current: $3,061 AUD|Low: $562 AUD|High: $3,089 AUD|Avg: $1,608 AUD|-0.9%
Rare Carat
Retailer 2
Retailer 3
October 31, 2026
Retailer 3$562 AUD
Retailer 2$1,168 AUD
Rare Carat$3,061 AUD

31 data points across 3 retailers

3 retailers$562 AUD to $1,168 AUD

A
Cheapest Retailer
-
$562 AUD
$395 USD
Final sale: no returns
A
Retailer 2
-
$1,168 AUD
£646 GBP
View
Most Expensive
Rare Carat
839603704 · Oct 21
$3,061 AUD
$2,150 USD
View
Price last confirmed 10 days ago
2 more retailers have this diamond
Prices start from $562 AUDSave up to $605 AUD

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
3.07ct Marquise
$562 AUD