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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 $4,096 USD
As of November 2, 2026
Save $24,084 USD (85%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $28,180 USD 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 $4,096 to $28,180, a $24,084 spread on the same certified stone. Do Amore Diamonds lists it at $28,180. 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
D
Color
IF
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
Top View
9.85 mm11.23 mm4.51 ctD / IF
OriginLab Grown
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG768631955
Side View
Table 58.0%Crown 37.4°Girdle: THK-VTKPavilion 40°Culet: NoneDepth 60.5%

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: $28,180 USD|Low: $4,022 USD|High: $30,252 USD|Avg: $12,673 USD|-2.2%
Do Amore Diamonds
Retailer 2
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Retailer 19
November 3, 2026
Retailer 4$4,096 USD
Retailer 13$4,293 USD
Retailer 18$4,432 USD
Retailer 6$4,692 USD
Retailer 5$4,805 USD
Retailer 19$5,844 USD
Retailer 12$6,302 USD
Retailer 17$6,554 USD
Retailer 15$7,357 USD
Retailer 7$8,962 USD
Retailer 2$10,860 USD
Retailer 14$11,471 USD
Retailer 11$13,015 USD
Retailer 8$15,684 USD
Retailer 3$16,990 USD
Retailer 10$24,470 USD
Retailer 9$25,578 USD
Retailer 16$26,934 USD
Do Amore Diamonds$28,180 USD

29 data points across 19 retailers

14 retailers$4,096 USD to $28,180 USD

A
Cheapest Retailer
-
$4,096 USD
A
Retailer 2
-
$4,293 USD
View
A
Retailer 3
-
$4,432 USD
View
A
Retailer 4
-
$4,692 USD
View
Final sale: no returns
A
Retailer 5
-
$4,805 USD
View
A
Retailer 6
-
$5,844 USD
View
A
Retailer 7
-
$6,302 USD
View
A
Retailer 8
-
$6,554 USD
View
B+
Retailer 9
-
$7,357 USD
View
B+
Retailer 10
-
$10,860 USD
£8,551 GBP
View
B+
Retailer 11
-
$11,471 USD
A$17,648 AUD
View
B
Retailer 12
-
$16,990 USD
View
B
Retailer 13
-
$26,934 USD
A$41,437 AUD
View
Most Expensive
B
Do Amore Diamonds
27-F7A77DB6F · Nov 2
$28,180 USD
View
13 more retailers have this diamond
Prices start from $4,096 USDSave up to $24,084 USD

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
$4,096 USD