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Heart|Lab Grown|IGI

1.51ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG836603148

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG836603148

Diamond specifications and retailer prices

From $361 USD
As of October 30, 2026
Save $3,028 USD (89%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: $3,389 USD at Novita Diamonds · As of October 31, 2026
View at Novita Diamonds

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 D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG836603148 or 836603148. Listed at 13 retailers as of October 30, 2026, with prices from $361 to $3,389, a $3,028 spread on the same certified stone. Novita Diamonds lists it at $3,389. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
D
Color
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.6°
Pavilion angle39.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG836603148
Dimensions7.81 × 6.84 × 4.69 mm
L/W Ratio1.14
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
7.81 mm6.84 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG836603148
Side View
Table 61.0%Crown 36.6°Girdle: STK-THKPavilion 39.6°Culet: NoneDepth 60.1%

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 30
Current: $3,389 USD|Low: $354 USD|High: $3,432 USD|Avg: $1,535 USD|-1.0%
Novita 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 9$361 USD
Retailer 6$523 USD
Retailer 3$645 USD
Retailer 12$717 USD
Retailer 4$819 USD
Retailer 8$1,152 USD
Retailer 5$1,196 USD
Retailer 10$1,314 USD
Retailer 13$1,590 USD
Retailer 2$1,933 USD
Retailer 7$2,740 USD
Retailer 11$3,210 USD
Novita Diamonds$3,389 USD

32 data points across 13 retailers

13 retailers$361 USD to $3,389 USD

A
Cheapest Retailer
-
$361 USD
A
Retailer 2
-
$523 USD
£412 GBP
View
A
Retailer 3
-
$645 USD
View
A
Retailer 4
-
$717 USD
View
A
Retailer 5
-
$819 USD
View
A
Retailer 6
-
$1,152 USD
A$1,773 AUD
View
B+
Retailer 7
-
$1,196 USD
View
B+
Retailer 8
-
$1,314 USD
View
B+
Retailer 9
-
$1,590 USD
View
B+
Retailer 10
-
$1,933 USD
£1,522 GBP
View
B
Retailer 11
-
$2,740 USD
View
B
Retailer 12
-
$3,210 USD
View
Most Expensive
B
Novita Diamonds
cert_836603148 · Oct 31
$3,389 USD
A$5,214 AUD
View
12 more retailers have this diamond
Prices start from $361 USDSave up to $3,028 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
$361 USD