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Cushion|Lab Grown|IGI

1.00ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG818640099

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG818640099

Diamond specifications and retailer prices

From $907 AUD
$637 USD
As of October 30, 2026
Save $2,809 AUD (76%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $3,716 AUD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1ct lab-grown cushion diamond

This 1ct 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 LG818640099 or 818640099. Listed at 16 retailers as of October 30, 2026, with prices from $907 to $3,716, a $2,809 spread on the same certified stone. Brilliant Earth lists it at $3,716. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.8°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818640099
Dimensions6.98 × 5.35 × 3.55 mm
L/W Ratio1.30
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
6.98 mm5.35 mm1.00 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818640099
Side View
Table 62.0%Crown 33.8°Girdle: THN-STKPavilion 41.4°Culet: NoneDepth 66.4%

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: Oct 30
Current: $3,716 AUD|Low: $545 AUD|High: $3,829 AUD|Avg: $1,815 AUD|-3.0%
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
Retailer 16
November 1, 2026
Retailer 16$767 AUD
Retailer 15$907 AUD
Retailer 14$929 AUD
Retailer 13$1,046 AUD
Retailer 7$1,139 AUD
Retailer 5$1,155 AUD
Retailer 10$1,275 AUD
Retailer 9$1,411 AUD
Retailer 12$1,461 AUD
Retailer 8$1,844 AUD
Retailer 11$1,859 AUD
Retailer 6$2,242 AUD
Retailer 4$2,772 AUD
Retailer 3$2,978 AUD
Retailer 2$3,547 AUD
Brilliant Earth$3,716 AUD

39 data points across 16 retailers

16 retailers$907 AUD to $3,716 AUD

Retailer 1
-
$767 AUD
$539 USD
Price last confirmed 13 days ago
Final sale: no returns
A
Retailer 2
-
$907 AUD
$637 USD
View
A
Retailer 3
-
$929 AUD
HK$5,100 HKD
View
A
Retailer 4
-
$1,046 AUD
$735 USD
View
A
Retailer 5
-
$1,139 AUD
$800 USD
View
A
Retailer 6
-
$1,155 AUD
$811 USD
View
B+
Retailer 7
-
$1,275 AUD
€853 EUR
View
B+
Retailer 8
-
$1,411 AUD
£781 GBP
View
B+
Retailer 9
-
$1,461 AUD
ZAR 16,574 ZAR
View
Retailer 10
-
$1,844 AUD
$1,296 USD
View
Price last confirmed 53 days ago
B+
Retailer 11
-
$1,859 AUD
$1,306 USD
View
B
Retailer 12
-
$2,242 AUD
SGD 2,128 SGD
View
B
Retailer 13
-
$2,772 AUD
$1,947 USD
View
B
Retailer 14
-
$2,978 AUD
$2,092 USD
View
B
Retailer 15
-
$3,547 AUD
£1,962 GBP
View
Most Expensive
B
Brilliant Earth
21086551A · Oct 31
$3,716 AUD
$2,610 USD
View
15 more retailers have this diamond
Prices start from $907 AUDSave up to $2,809 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
1.00ct Cushion
$907 AUD