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Cushion|Lab Grown|IGI

1.28ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG783648800

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG783648800

Diamond specifications and retailer prices

From $2,007 NZD
As of November 4, 2026
Save $2,209 NZD (52%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $4,216 NZD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

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 LG783648800 or 783648800. Listed at 5 retailers as of November 4, 2026, with prices from $2,007 to $4,216, a $2,209 spread on the same certified stone. Brilliant Earth lists it at $4,216. 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 angle36.3°
Pavilion angle33.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG783648800
Dimensions8.12 × 5.54 × 3.47 mm
L/W Ratio1.47
Girdle conditionFaceted
Culet sizePointed
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
8.12 mm5.54 mm1.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG783648800
Side View
Table 60.0%Crown 36.3°Girdle: THN-STKPavilion 33.7°Culet: NoneDepth 62.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: $4,216 NZD|Low: $1,272 NZD|High: $6,048 NZD|Avg: $3,262 NZD|-30.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 4, 2026
Retailer 6$1,272 NZD
Retailer 5$2,007 NZD
Retailer 9$2,055 NZD
Retailer 2$2,281 NZD
Retailer 11$2,551 NZD
Retailer 4$2,563 NZD
Retailer 10$2,649 NZD
Retailer 12$3,029 NZD
Retailer 7$3,465 NZD
Brilliant Earth$4,216 NZD
Retailer 8$5,692 NZD
Retailer 3$5,716 NZD

17 data points across 12 retailers

5 retailers$2,007 NZD to $4,216 NZD

Retailer 1
-
$1,272 NZD
Price last confirmed 24 days ago
B+
Retailer 2
-
$2,007 NZD
View
B+
Retailer 3
-
$2,281 NZD
View
Retailer 4
-
$3,465 NZD
View
Price last confirmed 25 days ago
Most Expensive
B
Brilliant Earth
21401971Y · Nov 4
$4,216 NZD
$2,370 USD
View
4 more retailers have this diamond
Prices start from $2,007 NZDSave up to $2,209 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.

B+
1.28ct Cushion
$2,007 NZD