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Heart|Lab Grown|IGI

1.51ct E IF Heart Lab Grown Diamond

ID • E/IF • IGI LG811645844

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG811645844

Diamond specifications and retailer prices

From $511 USD
As of October 28, 2026
Save $1,607 USD (76%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $2,118 USD at Brilliance · As of October 27, 2026
View at Brilliance

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 E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG811645844 or 811645844. Listed at 10 retailers as of October 27, 2026, with prices from $511 to $2,118, a $1,607 spread on the same certified stone. Brilliance lists it at $2,118. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
E
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle37.5°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG811645844
Dimensions7.70 × 7.20 × 4.68 mm
L/W Ratio1.07
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
7.70 mm7.20 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG811645844
Side View
Table 58.0%Crown 37.5°Girdle: MED-THKPavilion 39.4°Culet: NoneDepth 60.8%

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: Oct 28
Current: $2,118 USD|Low: $358 USD|High: $2,318 USD|Avg: $1,261 USD|-8.6%
Brilliance
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 29, 2026
Retailer 10$511 USD
Retailer 5$760 USD
Retailer 7$760 USD
Retailer 2$934 USD
Retailer 4$973 USD
Retailer 8$1,071 USD
Retailer 6$1,522 USD
Retailer 9$1,851 USD
Retailer 3$2,090 USD
Brilliance$2,118 USD

39 data points across 10 retailers

10 retailers$511 USD to $2,118 USD

A
Cheapest Retailer
-
$511 USD
Final sale: no returns
A
Retailer 2
-
$760 USD
View
A
Retailer 3
-
$760 USD
View
A
Retailer 4
-
$934 USD
£736 GBP
View
A
Retailer 5
-
$973 USD
ZAR 15,715 ZAR
View
A
Retailer 6
-
$1,071 USD
View
B
Retailer 7
-
$1,522 USD
View
B+
Retailer 8
-
$1,851 USD
View
B
Retailer 9
-
$2,090 USD
£1,646 GBP
View
Most Expensive
B
Brilliance
D44758911 · Oct 27
$2,118 USD
View
9 more retailers have this diamond
Prices start from $511 USDSave up to $1,607 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
1.51ct Heart
$511 USD