Heart|Lab Grown|IGI

1.51ct D FL Heart Lab Grown Diamond

ID • D/FL • IGI LG846662427

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG846662427

Diamond specifications and retailer prices

From €731 EUR
£643 GBP
As of November 1, 2026
Save €3,753 EUR (84%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: €4,484 EUR at Do Amore Diamonds · As of October 31, 2026
View at Do Amore Diamonds

About this 1.51ct lab-grown heart diamond

This 1.51ct 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 LG846662427 or 846662427. Listed at 10 retailers as of October 31, 2026, with prices from €731 to €4,484, a €3,753 spread on the same certified stone. Do Amore Diamonds lists it at €4,484. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Color
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.4°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846662427
Dimensions7.55 × 7.18 × 4.69 mm
L/W Ratio1.05
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
7.55 mm7.18 mm1.51 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846662427
Side View
Table 58.0%Crown 34.4°Girdle: STK-THKPavilion 39.6°Culet: NoneDepth 62.1%

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 1
Current: €4,484 EUR|Low: €731 EUR|High: €5,111 EUR|Avg: €1,961 EUR|-12.3%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 1, 2026
Retailer 2€731 EUR
Retailer 6€752 EUR
Retailer 10€783 EUR
Retailer 7€964 EUR
Retailer 3€1,108 EUR
Retailer 8€1,554 EUR
Retailer 9€1,933 EUR
Retailer 5€2,738 EUR
Retailer 4€2,999 EUR
Do Amore Diamonds€4,484 EUR

14 data points across 10 retailers

10 retailers€731 EUR to €4,484 EUR

A
Cheapest Retailer
-
€731 EUR
£643 GBP
A
Retailer 2
-
€752 EUR
$840 USD
View
A
Retailer 3
-
€783 EUR
$875 USD
View
A
Retailer 4
-
€964 EUR
$1,077 USD
View
B+
Retailer 5
-
€1,108 EUR
View
B+
Retailer 6
-
€1,554 EUR
$1,736 USD
View
B
Retailer 7
-
€1,933 EUR
$2,159 USD
View
B
Retailer 8
-
€2,738 EUR
£2,409 GBP
View
B
Retailer 9
-
€2,999 EUR
$3,350 USD
View
Most Expensive
B
Do Amore Diamonds
27-3C43927AF · Oct 31
€4,484 EUR
$5,010 USD
View
9 more retailers have this diamond
Prices start from €731 EURSave up to €3,753 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
1.51ct Heart
€731 EUR