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Heart|Lab Grown|IGI

1.51ct D IF Heart Lab Grown Diamond

ID • D/IF • IGI LG623495261

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG623495261

Diamond specifications and retailer prices

From $378 USD
As of October 30, 2026
Save $3,011 USD (89%) vs most expensive(unlock to see where)
31 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 LG623495261 or 623495261. Listed at 31 retailers as of October 30, 2026, with prices from $378 to $3,389, a $3,011 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°
Pavilion angle39.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG623495261
Dimensions7.08 × 7.89 × 4.71 mm
L/W Ratio1.11
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
7.08 mm7.89 mm1.51 ctD / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG623495261
Side View
Table 58.0%Crown 36°Girdle: MED-THKPavilion 39.4°Culet: NoneDepth 59.7%

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 30
Current: $3,389 USD|Low: $378 USD|High: $3,918 USD|Avg: $1,569 USD|-5.0%
Novita Diamonds
Retailer 2
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Retailer 21
November 2, 2026
Retailer 4$378 USD
Retailer 19$462 USD
Retailer 11$666 USD
Retailer 18$675 USD
Retailer 9$713 USD
Retailer 3$730 USD
Retailer 5$806 USD
Retailer 2$851 USD
Retailer 17$888 USD
Retailer 10$1,196 USD
Retailer 15$1,204 USD
Retailer 21$1,314 USD
Retailer 16$1,598 USD
Retailer 6$1,753 USD
Retailer 7$1,753 USD
Retailer 12$1,815 USD
Retailer 20$1,909 USD
Retailer 14$1,931 USD
Retailer 13$2,740 USD
Retailer 8$3,350 USD
Novita Diamonds$3,389 USD

41 data points across 21 retailers

31 retailers$378 USD to $3,389 USD

A
Cheapest Retailer
-
$378 USD
Retailer 2
-
$378 USD
View
Price last confirmed 24 days ago
Retailer 3
-
$378 USD
View
Price last confirmed 21 days ago
A
Retailer 4
-
$462 USD
View
Final sale: no returns
Retailer 5
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$468 USD
View
Price last confirmed 29 days ago
Retailer 6
-
$468 USD
View
Price last confirmed 22 days ago
A
Retailer 7
-
$666 USD
HK$5,200 HKD
View
A
Retailer 8
-
$675 USD
View
A
Retailer 9
-
$713 USD
View
A
Retailer 10
-
$730 USD
View
A
Retailer 11
-
$806 USD
View
Retailer 12
-
$807 USD
View
Price last confirmed 32 days ago
A
Retailer 13
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$851 USD
£670 GBP
View
Retailer 14
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$878 USD
View
Price last confirmed 34 days ago
A
Retailer 15
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$888 USD
ZAR 14,351 ZAR
View
Retailer 16
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$923 USD
View
Price last confirmed 35 days ago
B+
Retailer 17
-
$1,196 USD
View
B+
Retailer 18
-
$1,204 USD
A$1,852 AUD
View
B+
Retailer 19
-
$1,314 USD
View
B+
Retailer 20
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$1,598 USD
A$2,458 AUD
View
Retailer 21
-
$1,662 USD
View
Price last confirmed 22 days ago
B+
Retailer 22
-
$1,662 USD
View
B+
Retailer 23
-
$1,753 USD
View
B+
Retailer 24
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$1,753 USD
View
B+
Retailer 25
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$1,815 USD
View
Retailer 26
-
$1,909 USD
£1,503 GBP
View
Price last confirmed 11 days ago
B
Retailer 27
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$1,931 USD
SGD 2,609 SGD
View
B
Retailer 28
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$2,740 USD
View
Retailer 29
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$2,904 USD
View
Price last confirmed 32 days ago
B
Retailer 30
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$3,350 USD
View
Most Expensive
B
Novita Diamonds
cert_623495261 · Oct 31
$3,389 USD
A$5,214 AUD
View
30 more retailers have this diamond
Prices start from $378 USDSave up to $3,011 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
$378 USD