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Cushion|Lab Grown|IGI

1.09ct D FL Cushion Lab Grown Diamond

VG • D/FL • IGI LG818653702

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG818653702

Diamond specifications and retailer prices

From $689 AUD
$484 USD
As of October 25, 2026
Save $2,742 AUD (80%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,431 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 very-good cut grade and certified by IGI LG818653702 or 818653702. Listed at 13 retailers as of October 25, 2026, with prices from $689 to $3,431, a $2,742 spread on the same certified stone. Brilliant Earth lists it at $3,431. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.09
Carat
D
Colour
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.7°
Pavilion angle37.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818653702
Dimensions7.71 × 5.03 × 3.46 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
7.71 mm5.03 mm1.09 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818653702
Side View
Table 62.0%Crown 34.7°Girdle: MED-VTKPavilion 37.4°Culet: NoneDepth 68.8%

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 25
Current: $3,431 AUD|Low: $689 AUD|High: $4,171 AUD|Avg: $1,793 AUD|-17.7%
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
November 1, 2026
Retailer 10$689 AUD
Retailer 11$985 AUD
Retailer 9$989 AUD
Retailer 6$1,085 AUD
Retailer 13$1,098 AUD
Retailer 2$1,131 AUD
Retailer 8$1,185 AUD
Retailer 3$1,650 AUD
Retailer 4$1,828 AUD
Retailer 5$2,064 AUD
Retailer 12$2,270 AUD
Retailer 7$2,708 AUD
Brilliant Earth$3,431 AUD

39 data points across 13 retailers

13 retailers$689 AUD to $3,431 AUD

A
Cheapest Retailer
-
$689 AUD
$484 USD
A
Retailer 2
-
$985 AUD
$692 USD
View
A
Retailer 3
-
$989 AUD
$695 USD
View
A
Retailer 4
-
$1,085 AUD
€726 EUR
View
A
Retailer 5
-
$1,098 AUD
$771 USD
View
A
Retailer 6
-
$1,131 AUD
£625 GBP
View
A
Retailer 7
-
$1,185 AUD
ZAR 13,448 ZAR
View
B+
Retailer 8
-
$1,650 AUD
$1,159 USD
View
B+
Retailer 9
-
$1,828 AUD
SGD 1,735 SGD
View
Retailer 10
-
$2,064 AUD
$1,450 USD
View
Price last confirmed 13 days ago
B
Retailer 11
-
$2,270 AUD
$1,594 USD
View
B
Retailer 12
-
$2,708 AUD
£1,498 GBP
View
Most Expensive
B
Brilliant Earth
21421259A · Oct 31
$3,431 AUD
$2,410 USD
View
12 more retailers have this diamond
Prices start from $689 AUDSave up to $2,742 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
$689 AUD