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Cushion|Lab Grown|IGI

1.09ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG846663309

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG846663309

Diamond specifications and retailer prices

From $603 AUD
£333 GBP
As of November 1, 2026
Save $2,558 AUD (81%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $3,160 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.09ct lab-grown cushion diamond

This 1.09ct lab-grown cushion sits in the classic one-carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG846663309 or 846663309. Listed at 8 retailers as of October 31, 2026, with prices from $603 to $3,160, a $2,558 spread on the same certified stone. Brilliant Earth lists it at $3,160. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.09
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle35.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846663309
Dimensions7.98 × 5.20 × 3.48 mm
L/W Ratio1.53
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
7.98 mm5.20 mm1.09 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846663309
Side View
Table 63.0%Crown 33.7°Girdle: STK-THKPavilion 35.3°Culet: NoneDepth 66.9%

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 1
Current: $3,160 AUD|Low: $603 AUD|High: $4,043 AUD|Avg: $1,605 AUD|-21.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 4$603 AUD
Retailer 5$804 AUD
Retailer 3$945 AUD
Retailer 6$992 AUD
Retailer 8$1,230 AUD
Retailer 2$2,345 AUD
Retailer 7$2,450 AUD
Brilliant Earth$3,160 AUD

7 data points across 8 retailers

8 retailers$603 AUD to $3,160 AUD

A
Cheapest Retailer
-
$603 AUD
£333 GBP
A
Retailer 2
-
$804 AUD
$565 USD
View
A
Retailer 3
-
$945 AUD
$664 USD
View
A
Retailer 4
-
$992 AUD
$697 USD
View
B+
Retailer 5
-
$1,230 AUD
€823 EUR
View
B
Retailer 6
-
$2,345 AUD
£1,297 GBP
View
B+
Retailer 7
-
$2,450 AUD
$1,721 USD
View
Most Expensive
B
Brilliant Earth
22315344A · Oct 31
$3,160 AUD
$2,220 USD
View
7 more retailers have this diamond
Prices start from $603 AUDSave up to $2,558 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
1.09ct Cushion
$603 AUD