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Heart|Lab Grown|IGI

1.50ct D FL Heart Lab Grown Diamond

EX • D/FL • IGI LG831604178

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG831604178

Diamond specifications and retailer prices

From $1,276 NZD
$718 USD
As of November 2, 2026
Save $6,082 NZD (83%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $7,358 NZD at Brilliant Earth · As of November 2, 2026
View at Brilliant Earth

About this 1.5ct lab-grown heart diamond

This 1.5ct lab-grown heart sits in the one-and-a-half to two carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG831604178 or 831604178. Listed at 21 retailers as of November 2, 2026, with prices from $1,276 to $7,358, a $6,082 spread on the same certified stone. Brilliant Earth lists it at $7,358. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.50
Carat
D
Colour
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.6°
Pavilion angle39.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831604178
Dimensions7.20 × 8.04 × 4.55 mm
L/W Ratio1.12
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
7.20 mm8.04 mm1.50 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831604178
Side View
Table 64.0%Crown 33.6°Girdle: MED-STKPavilion 39.5°Culet: NoneDepth 56.6%

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 2
Current: $7,358 NZD|Low: $1,276 NZD|High: $10,161 NZD|Avg: $3,735 NZD|-14.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
November 2, 2026
Retailer 13$1,276 NZD
Retailer 17$1,388 NZD
Retailer 8$1,429 NZD
Retailer 21$1,479 NZD
Retailer 15$1,672 NZD
Retailer 11$1,729 NZD
Retailer 4$1,795 NZD
Retailer 5$1,903 NZD
Retailer 7$2,026 NZD
Retailer 19$2,147 NZD
Retailer 16$2,372 NZD
Retailer 2$3,167 NZD
Retailer 14$3,881 NZD
Retailer 3$4,159 NZD
Retailer 6$4,795 NZD
Retailer 9$4,982 NZD
Retailer 20$5,057 NZD
Retailer 12$5,100 NZD
Retailer 18$5,810 NZD
Retailer 10$7,035 NZD
Brilliant Earth$7,358 NZD

6 data points across 21 retailers

21 retailers$1,276 NZD to $7,358 NZD

A
Cheapest Retailer
-
$1,276 NZD
$718 USD
A
Retailer 2
-
$1,388 NZD
$781 USD
View
A
Retailer 3
-
$1,429 NZD
$804 USD
View
Final sale: no returns
A
Retailer 4
-
$1,479 NZD
$832 USD
View
A
Retailer 5
-
$1,672 NZD
£741 GBP
View
A
Retailer 6
-
$1,729 NZD
HK$7,600 HKD
View
A
Retailer 7
-
$1,795 NZD
$1,010 USD
View
A
Retailer 8
-
$1,903 NZD
$1,071 USD
View
A
Retailer 9
-
$2,026 NZD
$1,140 USD
View
B+
Retailer 10
-
$2,147 NZD
$1,208 USD
View
B+
Retailer 11
-
$2,372 NZD
£1,051 GBP
View
B+
Retailer 12
-
$3,167 NZD
$1,782 USD
View
B
Retailer 13
-
$3,881 NZD
ZAR 35,274 ZAR
View
B
Retailer 14
-
$4,159 NZD
$2,340 USD
View
B
Retailer 15
-
$4,795 NZD
$2,698 USD
View
B
Retailer 16
-
$4,982 NZD
SGD 3,788 SGD
View
B
Retailer 17
-
$5,057 NZD
$2,845 USD
View
B
Retailer 18
-
$5,100 NZD
$2,869 USD
View
B
Retailer 19
-
$5,810 NZD
£2,574 GBP
View
B
Retailer 20
-
$7,035 NZD
$3,958 USD
View
Most Expensive
B
Brilliant Earth
22337458A · Nov 2
$7,358 NZD
$4,140 USD
View
20 more retailers have this diamond
Prices start from $1,276 NZDSave up to $6,082 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
1.50ct Heart
$1,276 NZD