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Cushion|Lab Grown|IGI

1.51ct D IF Cushion Lab Grown Diamond

ID • D/IF • IGI LG825661104

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG825661104

Diamond specifications and retailer prices

From $832 NZD
As of November 4, 2026
Save $4,224 NZD (84%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $5,056 NZD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1.51ct lab-grown cushion diamond

This 1.51ct 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 LG825661104 or 825661104. Listed at 17 retailers as of November 4, 2026, with prices from $832 to $5,056, a $4,224 spread on the same certified stone. Brilliant Earth lists it at $5,056. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle32.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG825661104
Dimensions8.63 × 5.81 × 3.73 mm
L/W Ratio1.49
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
8.63 mm5.81 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG825661104
Side View
Table 60.0%Crown 34°Girdle: STK-THKPavilion 32.9°Culet: NoneDepth 64.2%

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: $5,056 NZD|Low: $789 NZD|High: $5,978 NZD|Avg: $2,296 NZD|-15.4%
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 5, 2026
Retailer 4$789 NZD
Retailer 5$832 NZD
Retailer 3$1,197 NZD
Retailer 2$1,320 NZD
Retailer 9$1,361 NZD
Retailer 11$1,584 NZD
Retailer 6$1,854 NZD
Retailer 8$1,990 NZD
Retailer 7$2,725 NZD
Retailer 10$3,085 NZD
Retailer 12$4,657 NZD
Brilliant Earth$5,056 NZD

34 data points across 12 retailers

17 retailers$832 NZD to $5,056 NZD

Retailer 1
-
$789 NZD
Price last confirmed 11 days ago
A
Retailer 2
-
$832 NZD
View
A
Retailer 3
-
$1,197 NZD
View
A
Retailer 4
-
$1,265 NZD
View
A
Retailer 5
-
$1,320 NZD
View
A
Retailer 6
-
$1,361 NZD
View
A
Retailer 7
-
$1,584 NZD
View
A
Retailer 8
-
$1,825 NZD
View
A
Retailer 9
-
$1,854 NZD
View
A
Retailer 10
-
$1,990 NZD
View
B+
Retailer 11
-
$2,610 NZD
View
B+
Retailer 12
-
$2,725 NZD
View
B+
Retailer 13
-
$3,085 NZD
View
B+
Retailer 14
-
$3,291 NZD
View
B
Retailer 15
-
$4,479 NZD
View
Retailer 16
-
$4,657 NZD
View
Price last confirmed 17 days ago
Most Expensive
B
Brilliant Earth
21612279A · Nov 4
$5,056 NZD
$2,850 USD
View
16 more retailers have this diamond
Prices start from $832 NZDSave up to $4,224 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
1.51ct Cushion
$832 NZD