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Cushion|Lab Grown|IGI

3.04ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG687530944

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG687530944

Diamond specifications and retailer prices

From $688 AUD
$483 USD
As of October 29, 2026
Save $3,925 AUD (85%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $4,612 AUD at Brilliant Earth · As of October 29, 2026
View at Brilliant Earth

About this 3.04ct lab-grown cushion diamond

This 3.04ct lab-grown cushion 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 LG687530944 or 687530944. Listed at 12 retailers as of October 29, 2026, with prices from $688 to $4,612, a $3,925 spread on the same certified stone. Brilliant Earth lists it at $4,612. 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

3.04
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.8°
Pavilion angle39.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG687530944
Dimensions9.76 × 7.80 × 5.32 mm
L/W Ratio1.25
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.76 mm7.80 mm3.04 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG687530944
Side View
Table 60.0%Crown 32.8°Girdle: THN-MEDPavilion 39.8°Culet: NoneDepth 68.2%

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: $4,612 AUD|Low: $673 AUD|High: $4,741 AUD|Avg: $1,645 AUD|-2.7%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
October 30, 2026
Retailer 4$688 AUD
Retailer 10$746 AUD
Retailer 7$989 AUD
Retailer 11$989 AUD
Retailer 3$1,176 AUD
Retailer 2$1,230 AUD
Retailer 5$1,245 AUD
Retailer 9$1,771 AUD
Retailer 6$2,755 AUD
Retailer 8$2,819 AUD
Brilliant Earth$4,612 AUD

43 data points across 11 retailers

12 retailers$688 AUD to $4,612 AUD

A
Cheapest Retailer
-
$688 AUD
$483 USD
Final sale: no returns
A
Retailer 2
-
$746 AUD
$524 USD
View
A
Retailer 3
-
$989 AUD
$695 USD
View
B+
Retailer 4
-
$989 AUD
$695 USD
View
A
Retailer 5
-
$1,176 AUD
$826 USD
View
A
Retailer 6
-
$1,230 AUD
£680 GBP
View
A
Retailer 7
-
$1,245 AUD
€833 EUR
View
A
Retailer 8
-
$1,442 AUD
$1,013 USD
View
B+
Retailer 9
-
$1,771 AUD
$1,244 USD
View
B+
Retailer 10
-
$2,755 AUD
£1,524 GBP
View
B
Retailer 11
-
$2,819 AUD
$1,980 USD
View
Most Expensive
B
Brilliant Earth
20628169A · Oct 29
$4,612 AUD
$3,240 USD
View
11 more retailers have this diamond
Prices start from $688 AUDSave up to $3,925 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
3.04ct Cushion
$688 AUD