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Heart|Lab Grown|IGI

4.51ct D FL Heart Lab Grown Diamond

EX • D/FL • IGI LG815698179

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG815698179

Diamond specifications and retailer prices

From €4,787 EUR
£4,211 GBP
As of October 30, 2026
Save €26,004 EUR (84%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: €30,791 EUR at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

About this 4.51ct lab-grown heart diamond

This 4.51ct lab-grown heart sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG815698179 or 815698179. Listed at 7 retailers as of October 30, 2026, with prices from €4,787 to €30,791, a €26,004 spread on the same certified stone. Do Amore Diamonds lists it at €30,791. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

4.51
Carat
D
Color
FL
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.7°
Pavilion angle38.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG815698179
Dimensions10.01 × 11.17 × 6.64 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
10.01 mm11.17 mm4.51 ctD / FL
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG815698179
Side View
Table 61.0%Crown 38.7°Girdle: ThickPavilion 38.5°Culet: NoneDepth 59.4%

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 30
Current: €30,791 EUR|Low: €4,777 EUR|High: €34,389 EUR|Avg: €12,465 EUR|-10.5%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 31, 2026
Retailer 7€4,787 EUR
Retailer 12€5,250 EUR
Retailer 3€5,319 EUR
Retailer 10€6,481 EUR
Retailer 2€6,485 EUR
Retailer 4€7,749 EUR
Retailer 9€8,024 EUR
Retailer 11€9,505 EUR
Retailer 8€11,721 EUR
Retailer 6€12,173 EUR
Retailer 13€15,796 EUR
Retailer 5€25,788 EUR
Do Amore Diamonds€30,791 EUR

23 data points across 13 retailers

7 retailers€4,787 EUR to €30,791 EUR

A
Cheapest Retailer
-
€4,787 EUR
£4,211 GBP
A
Retailer 2
-
€6,481 EUR
$7,241 USD
View
A
Retailer 3
-
€6,485 EUR
$7,245 USD
View
A
Retailer 4
-
€8,024 EUR
$8,964 USD
View
B+
Retailer 5
-
€11,721 EUR
£10,311 GBP
View
B+
Retailer 6
-
€12,173 EUR
$13,600 USD
View
Most Expensive
B
Do Amore Diamonds
27-F4538CA67 · Oct 30
€30,791 EUR
$34,400 USD
View
6 more retailers have this diamond
Prices start from €4,787 EURSave up to €26,004 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
4.51ct Heart
€4,787 EUR