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Marquise|Lab Grown|IGI

3.00ct E SI1 Marquise Lab Grown Diamond

EX • E/SI1 • IGI LG776620438

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG776620438

Diamond specifications and retailer prices

From $3,986 AUD
$2,800 USD
As of October 31, 2026
2 retailers carry this diamond
Most expensive: $3,986 AUD at Brilliant Earth
View at Brilliant Earth

About this 3ct lab-grown marquise diamond

This 3ct 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 LG776620438 or 776620438. Listed at 2 retailers as of October 31, 2026. 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

3.00
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG776620438
Dimensions14.53 × 7.50 × 4.82 mm
L/W Ratio1.94
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
14.53 mm7.50 mm3.00 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG776620438
Side View
Table 57.0%Crown 36.3°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 64.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: $3,986 AUD|Low: $413 AUD|High: $7,004 AUD|Avg: $1,854 AUD|-35.5%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
August 21, 2026
Retailer 3$413 AUD
Retailer 5$940 AUD
Retailer 8$960 AUD
Retailer 7$1,154 AUD
Retailer 9$1,154 AUD
Retailer 6$1,407 AUD
Retailer 11$1,520 AUD
Retailer 2$1,708 AUD
Retailer 10$2,392 AUD
Retailer 4$3,100 AUD
Brilliant Earth$3,986 AUD

74 data points across 11 retailers

2 retailers

Retailer 1
-
$3,100 AUD
$2,178 USD
Price last confirmed 76 days ago
Most Expensive
B
Brilliant Earth
20973260A · Oct 31
$3,986 AUD
$2,800 USD
View
1 more retailer has this diamond

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.

B
3.00ct Marquise
$3,986 AUD