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Cushion|Lab Grown|IGI

3.05ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG812619683

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG812619683

Diamond specifications and retailer prices

From $576 AUD
As of November 6, 2026
Save $3,149 AUD (85%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $3,726 AUD at Brilliant Earth · As of November 6, 2026
View at Brilliant Earth

About this 3.05ct lab-grown cushion diamond

This 3.05ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG812619683 or 812619683. Listed at 15 retailers as of November 6, 2026, with prices from $576 to $3,726, a $3,149 spread on the same certified stone. Brilliant Earth lists it at $3,726. 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

3.05
Carat
F
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG812619683
Dimensions10.28 × 7.42 × 4.67 mm
L/W Ratio1.39
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.28 mm7.42 mm3.05 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG812619683
Side View
Table 61.0%Crown 34.1°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 62.9%

Caratlytics Score

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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: Nov 6
Current: $3,726 AUD|Low: $576 AUD|High: $3,726 AUD|Avg: $1,539 AUD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 6, 2026
Retailer 12$576 AUD
Retailer 6$707 AUD
Retailer 8$779 AUD
Retailer 11$859 AUD
Retailer 2$987 AUD
Retailer 13$1,028 AUD
Retailer 7$1,108 AUD
Retailer 9$1,141 AUD
Retailer 14$1,505 AUD
Retailer 4$1,597 AUD
Retailer 15$1,607 AUD
Retailer 3$2,048 AUD
Retailer 10$2,495 AUD
Retailer 5$2,838 AUD
Brilliant Earth$3,726 AUD

30 data points across 15 retailers

15 retailers$576 AUD to $3,726 AUD

A
Cheapest Retailer
-
$576 AUD
Final sale: no returns
A
Retailer 2
-
$707 AUD
View
A
Retailer 3
-
$779 AUD
View
A
Retailer 4
-
$859 AUD
View
A
Retailer 5
-
$987 AUD
View
B+
Retailer 6
-
$1,028 AUD
View
Retailer 7
-
$1,108 AUD
View
Price last confirmed 12 days ago
A
Retailer 8
-
$1,141 AUD
View
A
Retailer 9
-
$1,505 AUD
View
A
Retailer 10
-
$1,597 AUD
View
B+
Retailer 11
-
$1,607 AUD
View
B+
Retailer 12
-
$2,048 AUD
View
B+
Retailer 13
-
$2,495 AUD
View
Retailer 14
-
$2,838 AUD
View
Price last confirmed 10 days ago
Most Expensive
B
Brilliant Earth
20319639A · Nov 6
$3,726 AUD
$2,560 USD
View
14 more retailers have this diamond
Prices start from $576 AUDSave up to $3,149 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
3.05ct Cushion
$576 AUD