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 $804 USD
As of October 31, 2026
Save $4,026 USD (83%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $4,830 USD at Brilliant Earth · As of October 30, 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 19 retailers as of October 30, 2026, with prices from $804 to $4,830, a $4,026 spread on the same certified stone. Brilliant Earth lists it at $4,830. 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
Color
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: Oct 31
Current: $4,830 USD|Low: $804 USD|High: $5,717 USD|Avg: $2,269 USD
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
October 31, 2026
Retailer 2$804 USD
Retailer 16$973 USD
Retailer 18$1,024 USD
Retailer 11$1,114 USD
Retailer 4$1,188 USD
Retailer 10$1,244 USD
Retailer 12$1,335 USD
Retailer 3$1,347 USD
Retailer 5$1,360 USD
Retailer 7$1,389 USD
Retailer 6$2,183 USD
Retailer 15$2,221 USD
Retailer 9$2,226 USD
Retailer 13$2,803 USD
Retailer 17$2,869 USD
Retailer 8$3,506 USD
Retailer 19$3,823 USD
Retailer 14$3,958 USD
Brilliant Earth$4,830 USD

4 data points across 19 retailers

19 retailers$804 USD to $4,830 USD

A
Cheapest Retailer
-
$804 USD
Final sale: no returns
A
Retailer 2
-
$973 USD
HK$7,600 HKD
View
A
Retailer 3
-
$1,024 USD
View
B+
Retailer 4
-
$1,114 USD
View
B+
Retailer 5
-
$1,188 USD
View
B+
Retailer 6
-
$1,244 USD
View
B+
Retailer 7
-
$1,335 USD
£1,051 GBP
View
B+
Retailer 8
-
$1,347 USD
£1,060 GBP
View
B+
Retailer 9
-
$1,360 USD
View
B+
Retailer 10
-
$1,389 USD
View
B
Retailer 11
-
$2,183 USD
ZAR 35,274 ZAR
View
B
Retailer 12
-
$2,221 USD
View
B
Retailer 13
-
$2,226 USD
View
B
Retailer 14
-
$2,803 USD
SGD 3,788 SGD
View
B
Retailer 15
-
$2,869 USD
View
B
Retailer 16
-
$3,506 USD
View
B
Retailer 17
-
$3,823 USD
View
B
Retailer 18
-
$3,958 USD
View
Most Expensive
B
Brilliant Earth
22337458A · Oct 30
$4,830 USD
View
18 more retailers have this diamond
Prices start from $804 USDSave up to $4,026 USD

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
$804 USD