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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 $7,448 CAD
£4,198 GBP
As of November 1, 2026
Save $40,605 CAD (85%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $48,053 CAD at Do Amore Diamonds · As of November 1, 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 November 1, 2026, with prices from $7,448 to $48,053, a $40,605 spread on the same certified stone. Do Amore Diamonds lists it at $48,053. 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

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $48,053 CAD|Low: $7,448 CAD|High: $53,669 CAD|Avg: $19,391 CAD|-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
November 1, 2026
Retailer 6$7,448 CAD
Retailer 12$8,193 CAD
Retailer 3$8,300 CAD
Retailer 10$10,115 CAD
Retailer 7$10,121 CAD
Retailer 4$12,093 CAD
Retailer 9$12,522 CAD
Retailer 11$14,834 CAD
Retailer 2$18,197 CAD
Retailer 8$18,998 CAD
Retailer 13$24,651 CAD
Retailer 5$40,246 CAD
Do Amore Diamonds$48,053 CAD

24 data points across 13 retailers

7 retailers$7,448 CAD to $48,053 CAD

A
Cheapest Retailer
-
$7,448 CAD
£4,198 GBP
A
Retailer 2
-
$10,115 CAD
$7,241 USD
View
A
Retailer 3
-
$10,121 CAD
$7,245 USD
View
A
Retailer 4
-
$12,522 CAD
$8,964 USD
View
B+
Retailer 5
-
$18,197 CAD
£10,257 GBP
View
B+
Retailer 6
-
$18,998 CAD
$13,600 USD
View
Most Expensive
B
Do Amore Diamonds
27-F4538CA67 · Nov 1
$48,053 CAD
$34,400 USD
View
6 more retailers have this diamond
Prices start from $7,448 CADSave up to $40,605 CAD

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
$7,448 CAD