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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 $1,022 AUD
$718 USD
As of November 2, 2026
Save $4,872 AUD (83%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $5,894 AUD at Brilliant Earth · As of October 31, 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 October 31, 2026, with prices from $1,022 to $5,894, a $4,872 spread on the same certified stone. Brilliant Earth lists it at $5,894. 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

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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: $5,894 AUD|Low: $1,022 AUD|High: $8,139 AUD|Avg: $2,998 AUD|-14.3%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 11
Retailer 12
Retailer 13
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Retailer 15
Retailer 16
Retailer 17
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Retailer 19
Retailer 20
Retailer 21
November 2, 2026
Retailer 2$1,022 AUD
Retailer 16$1,112 AUD
Retailer 7$1,145 AUD
Retailer 20$1,184 AUD
Retailer 13$1,339 AUD
Retailer 11$1,385 AUD
Retailer 3$1,438 AUD
Retailer 4$1,525 AUD
Retailer 6$1,623 AUD
Retailer 18$1,720 AUD
Retailer 15$1,900 AUD
Retailer 14$3,108 AUD
Retailer 10$3,162 AUD
Retailer 21$3,331 AUD
Retailer 5$3,841 AUD
Retailer 8$3,991 AUD
Retailer 19$4,050 AUD
Retailer 12$4,085 AUD
Retailer 17$4,654 AUD
Retailer 9$5,635 AUD
Brilliant Earth$5,894 AUD

6 data points across 21 retailers

21 retailers$1,022 AUD to $5,894 AUD

A
Cheapest Retailer
-
$1,022 AUD
$718 USD
A
Retailer 2
-
$1,112 AUD
$781 USD
View
A
Retailer 3
-
$1,145 AUD
$804 USD
View
Final sale: no returns
A
Retailer 4
-
$1,184 AUD
$832 USD
View
A
Retailer 5
-
$1,339 AUD
£741 GBP
View
A
Retailer 6
-
$1,385 AUD
HK$7,600 HKD
View
A
Retailer 7
-
$1,438 AUD
$1,010 USD
View
A
Retailer 8
-
$1,525 AUD
$1,071 USD
View
A
Retailer 9
-
$1,623 AUD
$1,140 USD
View
B+
Retailer 10
-
$1,720 AUD
$1,208 USD
View
B+
Retailer 11
-
$1,900 AUD
£1,051 GBP
View
B
Retailer 12
-
$3,108 AUD
ZAR 35,274 ZAR
View
B
Retailer 13
-
$3,162 AUD
$2,221 USD
View
B
Retailer 14
-
$3,331 AUD
$2,340 USD
View
B
Retailer 15
-
$3,841 AUD
$2,698 USD
View
B
Retailer 16
-
$3,991 AUD
SGD 3,788 SGD
View
B
Retailer 17
-
$4,050 AUD
$2,845 USD
View
B
Retailer 18
-
$4,085 AUD
$2,869 USD
View
B
Retailer 19
-
$4,654 AUD
£2,574 GBP
View
B
Retailer 20
-
$5,635 AUD
$3,958 USD
View
Most Expensive
B
Brilliant Earth
22337458A · Oct 31
$5,894 AUD
$4,140 USD
View
20 more retailers have this diamond
Prices start from $1,022 AUDSave up to $4,872 AUD

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
$1,022 AUD