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Cushion|Lab Grown|IGI

1.28ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG790683937

Shape and cutting style on the report: Antique cushion cut

Certificate IGI LG790683937

Diamond specifications and retailer prices

From $2,112 NZD
As of November 4, 2026
Save $6,470 NZD (75%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $8,582 NZD at Taylor and Hart · As of November 4, 2026
View at Taylor and Hart

About this 1.28ct lab-grown cushion diamond

This 1.28ct lab-grown cushion sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG790683937 or 790683937. Listed at 13 retailers as of November 4, 2026, with prices from $2,112 to $8,582, a $6,470 spread on the same certified stone. Taylor and Hart lists it at $8,582. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.4°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG790683937
Dimensions7.82 × 5.78 × 3.53 mm
L/W Ratio1.35
Girdle conditionFaceted
Culet sizeLarge
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
7.82 mm5.78 mm1.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG790683937
Side View
Table 58.0%Crown 37.4°Girdle: MED-THKPavilion 38.5°Culet: LargeDepth 61.1%

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 4
Current: $7,850 NZD|Low: $2,028 NZD|High: $7,977 NZD|Avg: $3,724 NZD|-1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 9$2,112 NZD
Retailer 3$2,298 NZD
Retailer 2$2,450 NZD
Retailer 10$2,450 NZD
Retailer 6$2,555 NZD
Retailer 7$2,757 NZD
Retailer 8$3,504 NZD
Retailer 5$3,519 NZD
Retailer 12$4,591 NZD
Retailer 11$4,693 NZD
Retailer 4$5,910 NZD
Retailer 1$7,850 NZD

44 data points across 12 retailers

13 retailers$2,112 NZD to $8,582 NZD

A
Cheapest Retailer
-
$2,112 NZD
B+
Retailer 2
-
$2,298 NZD
View
Retailer 3
-
$2,450 NZD
View
Price last confirmed 24 days ago
B+
Retailer 4
-
$2,450 NZD
View
B+
Retailer 5
-
$2,555 NZD
View
Final sale: no returns
B+
Retailer 6
-
$2,757 NZD
View
B+
Retailer 7
-
$3,504 NZD
View
B+
Retailer 8
-
$3,519 NZD
View
B
Retailer 9
-
$4,591 NZD
View
B
Retailer 10
-
$4,693 NZD
View
B
Retailer 11
-
$5,910 NZD
View
B
Retailer 12
-
$7,850 NZD
View
Most Expensive
B
Taylor and Hart
3KZQ333 · Nov 4
$8,582 NZD
$4,824 USD
View
12 more retailers have this diamond
Prices start from $2,112 NZDSave up to $6,470 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
1.28ct Cushion
$2,112 NZD