Heart|Lab Grown|IGI

4.51ct D IF Heart Lab Grown Diamond

D/IF • IGI LG768631955

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG768631955

Diamond specifications and retailer prices

From €3,652 EUR

$4,096 USD

As of November 2, 2026

Save €21,473 EUR (85%) vs most expensive(unlock to see where)

14 retailers carry this diamond

Most expensive: €25,125 EUR at Do Amore Diamonds · As of November 2, 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 IF clarity (flawless or internally-flawless) and certified by IGI LG768631955 or 768631955. Listed at 14 retailers as of November 2, 2026, with prices from €3,652 to €25,125, a €21,473 spread on the same certified stone. Do Amore Diamonds lists it at €25,125. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

4.51

Carat

Color

Clarity

Cut

Specifications

Cut

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle37.4°

Pavilion angle40°

OriginLab Grown

Grading LabIGI

CertificateIGI LG768631955

Dimensions9.85 × 11.23 × 6.79 mm

L/W Ratio1.14

Girdle conditionFaceted

Culet sizePointed

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

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG768631955

Side View

Caratlytics Score

How it works →

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: €25,125 EUR|Low: €3,586 EUR|High: €26,972 EUR|Avg: €11,316 EUR|-2.2%

Do Amore Diamonds

Retailer 2

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November 2, 2026

Retailer 3€3,652 EUR

Retailer 12€3,828 EUR

Retailer 17€3,951 EUR

Retailer 6€4,183 EUR

Retailer 5€4,284 EUR

Retailer 18€5,210 EUR

Retailer 2€5,619 EUR

Retailer 16€5,843 EUR

Retailer 14€6,559 EUR

Retailer 7€7,991 EUR

Retailer 4€9,737 EUR

Retailer 13€10,227 EUR

Retailer 11€11,604 EUR

Retailer 8€13,983 EUR

Retailer 19€15,148 EUR

Retailer 10€21,817 EUR

Retailer 9€22,805 EUR

Retailer 15€24,014 EUR

Do Amore Diamonds€25,125 EUR

28 data points across 19 retailers

14 retailers€3,652 EUR to €25,125 EUR

Cheapest Retailer

€3,652 EUR

$4,096 USD

Retailer 2

€3,828 EUR

$4,293 USD

View

Retailer 3

€3,951 EUR

$4,432 USD

View

Retailer 4

€4,183 EUR

$4,692 USD

View

Final sale: no returns

Retailer 5

€4,284 EUR

$4,805 USD

View

Retailer 6

€5,210 EUR

$5,844 USD

View

Retailer 7

€5,619 EUR

$6,302 USD

View

Retailer 8

€5,843 EUR

$6,554 USD

View

B+

Retailer 9

€6,559 EUR

$7,357 USD

View

B+

Retailer 10

€9,737 EUR

£8,599 GBP

View

B+

Retailer 11

€10,227 EUR

A$17,648 AUD

View

Retailer 12

€15,148 EUR

$16,990 USD

View

Retailer 13

€24,014 EUR

A$41,437 AUD

View

Most Expensive

Do Amore Diamonds

27-F7A77DB6F · Nov 2

€25,125 EUR

$28,180 USD

View

13 more retailers have this diamond

Prices start from €3,652 EURSave up to €21,473 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.

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4.51ct Heart

€3,652 EUR