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Heart|Lab Grown|IGI

1.51ct H VS1 Heart Lab Grown Diamond

EX • H/VS1 • IGI LG782601931

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG782601931

Diamond specifications and retailer prices

From $391 NZD
As of November 4, 2026
Save $1,544 NZD (80%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $3,060 NZD at Brilliant Earth · As of September 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 H colour (near-colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG782601931 or 782601931. Listed at 19 retailers as of November 4, 2026, with a 395% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
H
Colour
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle38.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG782601931
Dimensions7.23 × 8.00 × 4.62 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 Faint Blue
Top View
7.23 mm8.00 mm1.51 ctH / VS1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG782601931
Side View
Table 60.0%Crown 36.2°Girdle: MED-STKPavilion 38.7°Culet: NoneDepth 57.8%

Caratlytics Score

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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: Nov 4
Current: $1,814 NZD|Low: $391 NZD|High: $2,971 NZD|Avg: $1,054 NZD|-38.9%
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 5, 2026
Retailer 14$391 NZD
Retailer 7$436 NZD
Retailer 15$454 NZD
Retailer 17$484 NZD
Retailer 10$514 NZD
Retailer 2$642 NZD
Retailer 4$802 NZD
Retailer 9$829 NZD
Retailer 16$834 NZD
Retailer 5$882 NZD
Retailer 3$936 NZD
Retailer 13$1,130 NZD
Retailer 12$1,272 NZD
Retailer 18$1,557 NZD
Retailer 8$1,571 NZD
Retailer 6$1,649 NZD
Brilliant Earth$1,814 NZD
Retailer 11$1,935 NZD

45 data points across 18 retailers

19 retailers$391 NZD to $1,935 NZD

A
Cheapest Retailer
-
$391 NZD
A
Retailer 2
-
$436 NZD
View
Final sale: no returns
A
Retailer 3
-
$454 NZD
View
A
Retailer 4
-
$484 NZD
View
Retailer 5
-
$514 NZD
View
Price last confirmed 11 days ago
A
Retailer 6
-
$642 NZD
View
A
Retailer 7
-
$802 NZD
View
A
Retailer 8
-
$829 NZD
View
A
Retailer 9
-
$834 NZD
View
A
Retailer 10
-
$882 NZD
View
A
Retailer 11
-
$936 NZD
View
A
Retailer 12
-
$1,130 NZD
View
B+
Retailer 13
-
$1,272 NZD
View
B+
Retailer 14
-
$1,557 NZD
View
B+
Retailer 15
-
$1,571 NZD
View
B+
Retailer 16
-
$1,649 NZD
View
B+
Retailer 17
-
$1,814 NZD
View
B
Retailer 18
-
$1,935 NZD
View
Most Expensive
Brilliant Earth
20465160A · Sep 28
$3,060 NZD
$1,720 USD
View
Price last confirmed 38 days ago
18 more retailers have this diamond
Prices start from $391 NZDSave up to $1,544 NZD

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
$391 NZD