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Cushion|Lab Grown|IGI

3.05ct F SI1 Cushion Lab Grown Diamond

ID • F/SI1 • IGI LG809618099

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG809618099

Diamond specifications and retailer prices

From $585 AUD
As of November 4, 2026
Save $2,231 AUD (79%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $2,816 AUD at Rare Carat · As of November 1, 2026
View at Rare Carat

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 LG809618099 or 809618099. Listed at 11 retailers as of November 1, 2026, with prices from $585 to $2,816, a $2,231 spread on the same certified stone. Rare Carat lists it at $2,816. 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 angle31.5°
Pavilion angle34.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG809618099
Dimensions9.73 × 7.12 × 4.78 mm
L/W Ratio1.37
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.73 mm7.12 mm3.05 ctF / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG809618099
Side View
Table 58.0%Crown 31.5°Girdle: STK-THKPavilion 34.7°Culet: NoneDepth 67.1%

Caratlytics Score

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

Price History

Last verified: Nov 4
Current: $2,816 AUD|Low: $585 AUD|High: $2,860 AUD|Avg: $1,554 AUD|-1.5%
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 3$585 AUD
Retailer 6$649 AUD
Retailer 5$982 AUD
Retailer 10$1,041 AUD
Retailer 2$1,157 AUD
Retailer 8$1,217 AUD
Retailer 7$1,486 AUD
Retailer 9$2,144 AUD
Retailer 11$2,477 AUD
Retailer 4$2,528 AUD
Rare Carat$2,816 AUD

43 data points across 11 retailers

11 retailers$585 AUD to $2,816 AUD

A
Cheapest Retailer
-
$585 AUD
Final sale: no returns
Retailer 2
-
$649 AUD
View
Price last confirmed 13 days ago
A
Retailer 3
-
$982 AUD
View
B+
Retailer 4
-
$1,041 AUD
View
A
Retailer 5
-
$1,157 AUD
View
A
Retailer 6
-
$1,217 AUD
View
A
Retailer 7
-
$1,486 AUD
View
B+
Retailer 8
-
$2,144 AUD
View
B
Retailer 9
-
$2,477 AUD
View
B+
Retailer 10
-
$2,528 AUD
View
Most Expensive
B+
Rare Carat
K08-51A_l_809618099 · Nov 1
$2,816 AUD
$1,935 USD
View
10 more retailers have this diamond
Prices start from $585 AUDSave up to $2,231 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
$585 AUD