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Cushion|Lab Grown|IGI

1.54ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG816673339

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG816673339

Diamond specifications and retailer prices

From $979 NZD
As of November 4, 2026
Save $3,536 NZD (78%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $8,178 NZD at Brilliant Earth · As of September 28, 2026
View at Brilliant Earth

About this 1.54ct lab-grown cushion diamond

This 1.54ct lab-grown cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG816673339 or 816673339. Listed at 16 retailers as of November 4, 2026, with a 361% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.54
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.7°
Pavilion angle37.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816673339
Dimensions6.81 × 6.63 × 4.36 mm
L/W Ratio1.03
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
6.81 mm6.63 mm1.54 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816673339
Side View
Table 61.0%Crown 36.7°Girdle: STK-VTKPavilion 37.9°Culet: NoneDepth 65.8%

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: Nov 4
Current: $4,515 NZD|Low: $979 NZD|High: $4,579 NZD|Avg: $2,612 NZD|-0.2%
Retailer 1
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
November 5, 2026
Retailer 14$979 NZD
Retailer 8$1,142 NZD
Retailer 13$1,304 NZD
Retailer 4$1,499 NZD
Retailer 9$1,623 NZD
Retailer 7$1,785 NZD
Retailer 10$1,870 NZD
Retailer 5$1,971 NZD
Retailer 12$2,524 NZD
Retailer 6$3,532 NZD
Retailer 3$3,775 NZD
Retailer 2$4,055 NZD
Retailer 11$4,387 NZD
Retailer 1$4,515 NZD

43 data points across 14 retailers

16 retailers$979 NZD to $4,515 NZD

A
Cheapest Retailer
-
$979 NZD
Final sale: no returns
A
Retailer 2
-
$1,142 NZD
View
A
Retailer 3
-
$1,304 NZD
View
A
Retailer 4
-
$1,455 NZD
View
A
Retailer 5
-
$1,499 NZD
View
A
Retailer 6
-
$1,623 NZD
View
A
Retailer 7
-
$1,785 NZD
View
A
Retailer 8
-
$1,870 NZD
View
A
Retailer 9
-
$1,971 NZD
View
A
Retailer 10
-
$2,524 NZD
View
B+
Retailer 11
-
$3,532 NZD
View
B+
Retailer 12
-
$3,775 NZD
View
B+
Retailer 13
-
$4,055 NZD
View
B+
Retailer 14
-
$4,387 NZD
View
B+
Retailer 15
-
$4,515 NZD
View
Most Expensive
Brilliant Earth
20907181A · Sep 28
$8,178 NZD
$4,610 USD
View
Price last confirmed 37 days ago
15 more retailers have this diamond
Prices start from $979 NZDSave up to $3,536 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
1.54ct Cushion
$979 NZD