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Heart|Lab Grown|IGI

1.51ct E IF Heart Lab Grown Diamond

ID • E/IF • IGI LG835608021

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG835608021

Diamond specifications and retailer prices

From $310 USD
As of October 27, 2026
Save $2,660 USD (90%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: $2,970 USD at Brilliant Earth · As of October 28, 2026
View at Brilliant Earth

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 LG835608021 or 835608021. Listed at 21 retailers as of October 27, 2026, with prices from $310 to $2,970, a $2,660 spread on the same certified stone. Brilliant Earth lists it at $2,970. 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
SymmetryExcellent
FluorescenceNone
Crown angle38.3°
Pavilion angle37.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG835608021
Dimensions6.66 × 7.89 × 4.72 mm
L/W Ratio1.18
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
6.66 mm7.89 mm1.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG835608021
Side View
Table 57.0%Crown 38.3°Girdle: STK-THKPavilion 37.8°Culet: NoneDepth 59.8%

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 27
Current: $2,970 USD|Low: $290 USD|High: $2,970 USD|Avg: $1,004 USD
Brilliant Earth
Retailer 2
Retailer 3
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Retailer 5
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Retailer 7
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Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 17
Retailer 18
Retailer 19
October 29, 2026
Retailer 18$310 USD
Retailer 4$384 USD
Retailer 5$384 USD
Retailer 2$398 USD
Retailer 8$425 USD
Retailer 15$540 USD
Retailer 19$626 USD
Retailer 13$660 USD
Retailer 14$680 USD
Retailer 7$717 USD
Retailer 12$895 USD
Retailer 6$1,020 USD
Retailer 17$1,180 USD
Retailer 9$1,281 USD
Retailer 10$1,477 USD
Retailer 16$1,542 USD
Retailer 3$1,544 USD
Retailer 11$2,367 USD
Brilliant Earth$2,970 USD

28 data points across 19 retailers

21 retailers$310 USD to $2,970 USD

A
Cheapest Retailer
-
$310 USD
A
Retailer 2
-
$377 USD
View
Price last confirmed 30 days ago
A
Retailer 3
-
$384 USD
View
A
Retailer 4
-
$384 USD
View
A
Retailer 5
-
$398 USD
£313 GBP
View
A
Retailer 6
-
$425 USD
View
Final sale: no returns
A
Retailer 7
-
$540 USD
View
A
Retailer 8
-
$626 USD
View
A
Retailer 9
-
$660 USD
ZAR 10,664 ZAR
View
A
Retailer 10
-
$680 USD
£535 GBP
View
A
Retailer 11
-
$717 USD
View
A
Retailer 12
-
$895 USD
A$1,377 AUD
View
A
Retailer 13
-
$1,020 USD
View
B+
Retailer 14
-
$1,180 USD
View
B+
Retailer 15
-
$1,265 USD
View
Price last confirmed 28 days ago
B+
Retailer 16
-
$1,281 USD
View
B+
Retailer 17
-
$1,477 USD
View
B+
Retailer 18
-
$1,542 USD
£1,214 GBP
View
B+
Retailer 19
-
$1,544 USD
View
B
Retailer 20
-
$2,367 USD
A$3,641 AUD
View
Price last confirmed 21 days ago
Most Expensive
B
Brilliant Earth
21696528A · Oct 28
$2,970 USD
View
20 more retailers have this diamond
Prices start from $310 USDSave up to $2,660 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
$310 USD