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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 €720 EUR
$804 USD
As of October 31, 2026
Save €2,986 EUR (81%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: €3,706 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 €720 to €3,706, a €2,986 spread on the same certified stone. Brilliant Earth lists it at €3,706. 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

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: Oct 31
Current: €3,706 EUR|Low: €720 EUR|High: €5,117 EUR|Avg: €1,935 EUR|-14.3%
Brilliant Earth
Retailer 2
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Retailer 4
Retailer 5
Retailer 6
Retailer 7
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Retailer 21
November 1, 2026
Retailer 5€720 EUR
Retailer 17€745 EUR
Retailer 16€842 EUR
Retailer 9€871 EUR
Retailer 20€904 EUR
Retailer 11€917 EUR
Retailer 21€959 EUR
Retailer 14€997 EUR
Retailer 4€1,020 EUR
Retailer 13€1,081 EUR
Retailer 19€1,195 EUR
Retailer 12€1,954 EUR
Retailer 8€1,988 EUR
Retailer 18€2,095 EUR
Retailer 3€2,415 EUR
Retailer 6€2,509 EUR
Retailer 15€2,547 EUR
Retailer 10€2,568 EUR
Retailer 2€2,926 EUR
Retailer 7€3,543 EUR
Brilliant Earth€3,706 EUR

5 data points across 21 retailers

21 retailers€720 EUR to €3,706 EUR

A
Cheapest Retailer
-
€720 EUR
$804 USD
Final sale: no returns
A
Retailer 2
-
€745 EUR
$832 USD
View
A
Retailer 3
-
€842 EUR
£741 GBP
View
A
Retailer 4
-
€871 EUR
HK$7,600 HKD
View
A
Retailer 5
-
€904 EUR
$1,010 USD
View
A
Retailer 6
-
€917 EUR
$1,024 USD
View
A
Retailer 7
-
€959 EUR
$1,071 USD
View
B+
Retailer 8
-
€997 EUR
$1,114 USD
View
A
Retailer 9
-
€1,020 EUR
$1,140 USD
View
B+
Retailer 10
-
€1,081 EUR
$1,208 USD
View
B+
Retailer 11
-
€1,195 EUR
£1,051 GBP
View
B
Retailer 12
-
€1,954 EUR
ZAR 35,274 ZAR
View
B
Retailer 13
-
€1,988 EUR
$2,221 USD
View
B
Retailer 14
-
€2,095 EUR
$2,340 USD
View
B
Retailer 15
-
€2,415 EUR
$2,698 USD
View
B
Retailer 16
-
€2,509 EUR
SGD 3,788 SGD
View
B
Retailer 17
-
€2,547 EUR
$2,845 USD
View
B
Retailer 18
-
€2,568 EUR
$2,869 USD
View
B
Retailer 19
-
€2,926 EUR
£2,574 GBP
View
B
Retailer 20
-
€3,543 EUR
$3,958 USD
View
Most Expensive
B
Brilliant Earth
22337458A · Oct 31
€3,706 EUR
$4,140 USD
View
20 more retailers have this diamond
Prices start from €720 EURSave up to €2,986 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
€720 EUR