CaratHunter
Plans
Heart|Lab Grown|IGI

1.51ct D IF Heart Lab Grown Diamond

EX • D/IF • IGI LG754561307

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG754561307

Diamond specifications and retailer prices

From $632 USD
As of November 1, 2026
Save $2,757 USD (81%) vs most expensive(unlock to see where)
9 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 LG754561307 or 754561307. Listed at 9 retailers as of October 31, 2026, with prices from $632 to $3,389, a $2,757 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
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.4°
Pavilion angle37.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG754561307
Dimensions6.91 × 8.16 × 4.52 mm
L/W Ratio1.18
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
6.91 mm8.16 mm1.51 ctD / IF
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG754561307
Side View
Table 54.0%Crown 36.4°Girdle: MED-STKPavilion 37.7°Culet: NoneDepth 55.4%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: $3,389 USD|Low: $632 USD|High: $3,439 USD|Avg: $1,620 USD|+1.5%
Novita Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 4$632 USD
Retailer 7$715 USD
Retailer 2$850 USD
Retailer 8$1,037 USD
Retailer 9$1,549 USD
Retailer 6$1,642 USD
Retailer 3$1,836 USD
Retailer 5$3,150 USD
Novita Diamonds$3,389 USD

46 data points across 9 retailers

9 retailers$632 USD to $3,389 USD

A
Cheapest Retailer
-
$632 USD
A
Retailer 2
-
$715 USD
View
A
Retailer 3
-
$850 USD
£669 GBP
View
A
Retailer 4
-
$1,037 USD
View
B+
Retailer 5
-
$1,549 USD
View
B+
Retailer 6
-
$1,642 USD
View
B+
Retailer 7
-
$1,836 USD
£1,446 GBP
View
Retailer 8
-
$3,150 USD
View
Price last confirmed 16 days ago
Most Expensive
B
Novita Diamonds
cert_754561307 · Oct 31
$3,389 USD
A$5,214 AUD
View
8 more retailers have this diamond
Prices start from $632 USDSave up to $2,757 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
$632 USD