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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 $751 NZD
£333 GBP
As of November 1, 2026
Save $3,188 NZD (81%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $3,939 NZD 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 $751 to $3,939, a $3,188 spread on the same certified stone. Brilliant Earth lists it at $3,939. 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

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: Nov 1
Current: $3,939 NZD|Low: $751 NZD|High: $5,039 NZD|Avg: $2,001 NZD|-21.8%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 1, 2026
Retailer 4$751 NZD
Retailer 5$1,002 NZD
Retailer 3$1,178 NZD
Retailer 6$1,237 NZD
Retailer 8$1,533 NZD
Retailer 2$2,923 NZD
Retailer 7$3,054 NZD
Brilliant Earth$3,939 NZD

7 data points across 8 retailers

8 retailers$751 NZD to $3,939 NZD

A
Cheapest Retailer
-
$751 NZD
£333 GBP
A
Retailer 2
-
$1,002 NZD
$565 USD
View
A
Retailer 3
-
$1,178 NZD
$664 USD
View
A
Retailer 4
-
$1,237 NZD
$697 USD
View
B+
Retailer 5
-
$1,533 NZD
€823 EUR
View
B+
Retailer 6
-
$2,923 NZD
£1,297 GBP
View
B+
Retailer 7
-
$3,054 NZD
$1,721 USD
View
Most Expensive
B
Brilliant Earth
22315344A · Oct 31
$3,939 NZD
$2,220 USD
View
7 more retailers have this diamond
Prices start from $751 NZDSave up to $3,188 NZD

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
$751 NZD