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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 €640 EUR
$718 USD
As of November 2, 2026
Save €3,051 EUR (83%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €3,691 EUR 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 €640 to €3,691, a €3,051 spread on the same certified stone. Brilliant Earth lists it at €3,691. 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: €3,691 EUR|Low: €640 EUR|High: €5,097 EUR|Avg: €1,878 EUR|-14.3%
Brilliant Earth
Retailer 2
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Retailer 5
Retailer 6
Retailer 7
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Retailer 11
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Retailer 15
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Retailer 21
November 2, 2026
Retailer 2€640 EUR
Retailer 16€696 EUR
Retailer 7€717 EUR
Retailer 20€742 EUR
Retailer 13€839 EUR
Retailer 11€867 EUR
Retailer 3€900 EUR
Retailer 4€955 EUR
Retailer 6€1,016 EUR
Retailer 18€1,077 EUR
Retailer 15€1,190 EUR
Retailer 14€1,947 EUR
Retailer 10€1,980 EUR
Retailer 21€2,086 EUR
Retailer 5€2,405 EUR
Retailer 8€2,499 EUR
Retailer 19€2,537 EUR
Retailer 12€2,558 EUR
Retailer 17€2,915 EUR
Retailer 9€3,529 EUR
Brilliant Earth€3,691 EUR

6 data points across 21 retailers

21 retailers€640 EUR to €3,691 EUR

A
Cheapest Retailer
-
€640 EUR
$718 USD
A
Retailer 2
-
€696 EUR
$781 USD
View
A
Retailer 3
-
€717 EUR
$804 USD
View
Final sale: no returns
A
Retailer 4
-
€742 EUR
$832 USD
View
A
Retailer 5
-
€839 EUR
£741 GBP
View
A
Retailer 6
-
€867 EUR
HK$7,600 HKD
View
A
Retailer 7
-
€900 EUR
$1,010 USD
View
A
Retailer 8
-
€955 EUR
$1,071 USD
View
A
Retailer 9
-
€1,016 EUR
$1,140 USD
View
B+
Retailer 10
-
€1,077 EUR
$1,208 USD
View
B+
Retailer 11
-
€1,190 EUR
£1,051 GBP
View
B
Retailer 12
-
€1,947 EUR
ZAR 35,274 ZAR
View
B
Retailer 13
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€1,980 EUR
$2,221 USD
View
B
Retailer 14
-
€2,086 EUR
$2,340 USD
View
B
Retailer 15
-
€2,405 EUR
$2,698 USD
View
B
Retailer 16
-
€2,499 EUR
SGD 3,788 SGD
View
B
Retailer 17
-
€2,537 EUR
$2,845 USD
View
B
Retailer 18
-
€2,558 EUR
$2,869 USD
View
B
Retailer 19
-
€2,915 EUR
£2,574 GBP
View
B
Retailer 20
-
€3,529 EUR
$3,958 USD
View
Most Expensive
B
Brilliant Earth
22337458A · Oct 31
€3,691 EUR
$4,140 USD
View
20 more retailers have this diamond
Prices start from €640 EURSave up to €3,051 EUR

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
€640 EUR