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Cushion|Lab Grown|IGI

1.00ct D FL Cushion Lab Grown Diamond

ID • D/FL • IGI LG816624108

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

Certificate IGI LG816624108

Diamond specifications and retailer prices

From $646 NZD
As of November 3, 2026
Save $2,831 NZD (81%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,477 NZD at Brilliant Earth · As of November 4, 2026
View at Brilliant Earth

About this 1ct lab-grown cushion diamond

This 1ct 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 LG816624108 or 816624108. Listed at 13 retailers as of November 3, 2026, with prices from $646 to $3,477, a $2,831 spread on the same certified stone. Brilliant Earth lists it at $3,477. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.00
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle38.3°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816624108
Dimensions5.94 × 5.76 × 3.74 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
5.94 mm5.76 mm1.00 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG816624108
Side View
Table 62.0%Crown 36.3°Girdle: MED-STKPavilion 38.3°Culet: NoneDepth 64.9%

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 3
Current: $3,477 NZD|Low: $646 NZD|High: $4,612 NZD|Avg: $1,742 NZD|-24.6%
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
November 5, 2026
Retailer 13$646 NZD
Retailer 5$738 NZD
Retailer 12$1,036 NZD
Retailer 8$1,038 NZD
Retailer 2$1,137 NZD
Retailer 3$1,158 NZD
Retailer 10$1,158 NZD
Retailer 9$1,235 NZD
Retailer 7$2,170 NZD
Retailer 4$2,359 NZD
Retailer 6$2,590 NZD
Retailer 11$2,828 NZD
Brilliant Earth$3,477 NZD

37 data points across 13 retailers

13 retailers$646 NZD to $3,477 NZD

A
Cheapest Retailer
-
$646 NZD
Final sale: no returns
Retailer 2
-
$738 NZD
View
Price last confirmed 24 days ago
A
Retailer 3
-
$1,036 NZD
View
A
Retailer 4
-
$1,038 NZD
View
A
Retailer 5
-
$1,137 NZD
View
A
Retailer 6
-
$1,158 NZD
View
A
Retailer 7
-
$1,158 NZD
View
A
Retailer 8
-
$1,235 NZD
View
B+
Retailer 9
-
$2,170 NZD
View
B+
Retailer 10
-
$2,359 NZD
View
B+
Retailer 11
-
$2,590 NZD
View
B
Retailer 12
-
$2,828 NZD
View
Most Expensive
B
Brilliant Earth
21018360A · Nov 4
$3,477 NZD
$1,960 USD
View
12 more retailers have this diamond
Prices start from $646 NZDSave up to $2,831 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
1.00ct Cushion
$646 NZD