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Marquise|Lab Grown|IGI

3.08ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG840639113

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG840639113

Diamond specifications and retailer prices

From $578 AUD
$406 USD
As of October 29, 2026
Save $3,394 AUD (85%) vs most expensive(unlock to see where)
4 retailers carry this diamond
Most expensive: $3,972 AUD at Brilliant Earth · As of October 30, 2026
View at Brilliant Earth

About this 3.08ct lab-grown marquise diamond

This 3.08ct 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 LG840639113 or 840639113. Listed at 4 retailers as of October 29, 2026, with prices from $578 to $3,972, a $3,394 spread on the same certified stone. Brilliant Earth lists it at $3,972. 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

3.08
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840639113
Dimensions15.09 × 7.60 × 4.77 mm
L/W Ratio1.99
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
15.09 mm7.60 mm3.08 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840639113
Side View
Table 57.0%Crown 34.7°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 62.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $3,972 AUD|Low: $578 AUD|High: $3,972 AUD|Avg: $2,244 AUD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
October 31, 2026
Retailer 3$578 AUD
Retailer 2$1,195 AUD
Retailer 4$3,068 AUD
Brilliant Earth$3,972 AUD

25 data points across 4 retailers

4 retailers$578 AUD to $3,972 AUD

A
Cheapest Retailer
-
$578 AUD
$406 USD
Final sale: no returns
A
Retailer 2
-
$1,195 AUD
£661 GBP
View
Retailer 3
-
$3,068 AUD
$2,155 USD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
21613225A · Oct 30
$3,972 AUD
$2,790 USD
View
3 more retailers have this diamond
Prices start from $578 AUDSave up to $3,394 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
3.08ct Marquise
$578 AUD