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Cushion|Lab Grown|IGI

1.21ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG840633344

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG840633344

Diamond specifications and retailer prices

From $804 NZD
$453 USD
As of November 1, 2026
Save $3,330 NZD (81%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $4,134 NZD at Brilliant Earth · As of October 31, 2026
View at Brilliant Earth

About this 1.21ct lab-grown cushion diamond

This 1.21ct 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 LG840633344 or 840633344. Listed at 17 retailers as of October 31, 2026, with prices from $804 to $4,134, a $3,330 spread on the same certified stone. Brilliant Earth lists it at $4,134. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.21
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.5°
Pavilion angle37.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840633344
Dimensions7.66 × 5.47 × 3.61 mm
L/W Ratio1.40
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
7.66 mm5.47 mm1.21 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG840633344
Side View
Table 61.0%Crown 32.5°Girdle: MED-STKPavilion 37.5°Culet: NoneDepth 66.0%

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 1
Current: $4,134 NZD|Low: $804 NZD|High: $4,489 NZD|Avg: $2,159 NZD|-7.9%
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
Retailer 17
November 1, 2026
Retailer 3$804 NZD
Retailer 16$866 NZD
Retailer 10$891 NZD
Retailer 13$1,127 NZD
Retailer 5$1,276 NZD
Retailer 6$1,375 NZD
Retailer 11$1,408 NZD
Retailer 17$1,453 NZD
Retailer 15$1,487 NZD
Retailer 12$1,503 NZD
Retailer 14$2,079 NZD
Retailer 8$2,786 NZD
Retailer 4$2,847 NZD
Retailer 7$3,003 NZD
Retailer 2$3,382 NZD
Retailer 9$4,115 NZD
Brilliant Earth$4,134 NZD

25 data points across 17 retailers

17 retailers$804 NZD to $4,134 NZD

A
Cheapest Retailer
-
$804 NZD
$453 USD
Final sale: no returns
Retailer 2
-
$866 NZD
$488 USD
View
Price last confirmed 8 days ago
A
Retailer 3
-
$891 NZD
£395 GBP
View
A
Retailer 4
-
$1,127 NZD
$635 USD
View
A
Retailer 5
-
$1,276 NZD
$719 USD
View
A
Retailer 6
-
$1,375 NZD
$775 USD
View
A
Retailer 7
-
$1,408 NZD
£625 GBP
View
A
Retailer 8
-
$1,453 NZD
$819 USD
View
A
Retailer 9
-
$1,487 NZD
ZAR 13,540 ZAR
View
A
Retailer 10
-
$1,503 NZD
€807 EUR
View
B+
Retailer 11
-
$2,079 NZD
$1,172 USD
View
Retailer 12
-
$2,786 NZD
$1,570 USD
View
Price last confirmed 18 days ago
B+
Retailer 13
-
$2,847 NZD
$1,604 USD
View
B+
Retailer 14
-
$3,003 NZD
SGD 2,287 SGD
View
B+
Retailer 15
-
$3,382 NZD
£1,501 GBP
View
B
Retailer 16
-
$4,115 NZD
$2,319 USD
View
Most Expensive
B
Brilliant Earth
21729045A · Oct 31
$4,134 NZD
$2,330 USD
View
16 more retailers have this diamond
Prices start from $804 NZDSave up to $3,330 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
1.21ct Cushion
$804 NZD