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Heart|Lab Grown|IGI

1.51ct E IF Heart Lab Grown Diamond

EX • E/IF • IGI LG632488346

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG632488346

Diamond specifications and retailer prices

From $335 USD
As of October 27, 2026
Save $3,145 USD (90%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: $3,480 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 LG632488346 or 632488346. Listed at 22 retailers as of October 27, 2026, with prices from $335 to $3,480, a $3,145 spread on the same certified stone. Brilliant Earth lists it at $3,480. 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.7°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG632488346
Dimensions7.11 × 7.11 × 8.03 mm
L/W Ratio1.00
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
7.11 mm7.11 mm1.51 ctE / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG632488346
Side View
Table 63.0%Crown 32.7°Girdle: MED-STKPavilion 39.4°Culet: NoneDepth 56.7%

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: $3,480 USD|Low: $322 USD|High: $3,480 USD|Avg: $1,031 USD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
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Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
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Retailer 17
Retailer 18
October 29, 2026
Retailer 18$335 USD
Retailer 6$389 USD
Retailer 3$415 USD
Retailer 7$415 USD
Retailer 11$430 USD
Retailer 5$558 USD
Retailer 13$570 USD
Retailer 12$714 USD
Retailer 2$742 USD
Retailer 8$746 USD
Retailer 9$1,028 USD
Retailer 15$1,028 USD
Retailer 16$1,290 USD
Retailer 4$1,335 USD
Retailer 10$1,624 USD
Retailer 14$1,666 USD
Retailer 17$2,374 USD
Brilliant Earth$3,480 USD

35 data points across 18 retailers

22 retailers$335 USD to $3,480 USD

A
Cheapest Retailer
-
$335 USD
A
Retailer 2
-
$374 USD
View
Final sale: no returns
A
Retailer 3
-
$389 USD
View
A
Retailer 4
-
$415 USD
View
A
Retailer 5
-
$415 USD
View
A
Retailer 6
-
$430 USD
£339 GBP
View
A
Retailer 7
-
$558 USD
View
A
Retailer 8
-
$570 USD
View
A
Retailer 9
-
$714 USD
ZAR 11,529 ZAR
View
A
Retailer 10
-
$742 USD
£584 GBP
View
A
Retailer 11
-
$746 USD
View
A
Retailer 12
-
$1,028 USD
View
A
Retailer 13
-
$1,028 USD
View
B+
Retailer 14
-
$1,290 USD
View
B+
Retailer 15
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$1,335 USD
View
B+
Retailer 16
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$1,379 USD
View
B+
Retailer 17
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$1,569 USD
View
B+
Retailer 18
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$1,624 USD
View
B+
Retailer 19
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$1,666 USD
£1,312 GBP
View
B
Retailer 20
-
$2,374 USD
A$3,652 AUD
View
Price last confirmed 20 days ago
B
Retailer 21
-
$2,781 USD
£2,190 GBP
View
Most Expensive
B
Brilliant Earth
13387894A · Oct 28
$3,480 USD
View
21 more retailers have this diamond
Prices start from $335 USDSave up to $3,145 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
$335 USD