Heart|Natural|GIA

1.51ct J SI1 Heart Natural Diamond

EX • J/SI1 • GIA 1242032984

Certificate GIA 1242032984

Diamond specifications and retailer prices

From $2,867 USD
As of November 6, 2026
Save $3,611 USD (56%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $7,327 USD at NZ Jewellers · As of September 25, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1242032984. Listed at 14 retailers as of November 2, 2026, with a 126% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
J
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1242032984
Dimensions7.79 × 6.57 × 4.88 mm
L/W Ratio1.19
Girdle conditionFaceted
Top View
7.79 mm6.57 mm1.51 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1242032984
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NDepth 62.6%

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: Nov 6
Current: $3,619 USD|Low: $2,828 USD|High: $7,118 USD|Avg: $4,312 USD|-4.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 10$2,867 USD
Retailer 6$3,252 USD
Retailer 8$3,497 USD
Retailer 2$3,500 USD
Retailer 11$3,575 USD
Retailer 1$3,619 USD
Retailer 5$3,660 USD
Retailer 12$4,270 USD
Retailer 4$4,450 USD
Retailer 7$4,728 USD
Retailer 3$6,019 USD
Retailer 9$6,478 USD

37 data points across 12 retailers

14 retailers$2,867 USD to $6,478 USD

A
Cheapest Retailer
-
$2,867 USD
A
Retailer 2
-
$3,252 USD
View
B+
Retailer 3
-
$3,497 USD
View
A
Retailer 4
-
$3,500 USD
View
B+
Retailer 5
-
$3,575 USD
View
Final sale: no returns
B+
Retailer 6
-
$3,619 USD
View
B+
Retailer 7
-
$3,660 USD
View
B+
Retailer 8
-
$4,197 USD
View
B+
Retailer 9
-
$4,270 USD
View
Retailer 10
-
$4,450 USD
View
Price last confirmed 33 days ago
B
Retailer 11
-
$4,728 USD
View
B
Retailer 12
-
$6,019 USD
View
B
Retailer 13
-
$6,478 USD
View
Most Expensive
NZ Jewellers
dcac04e0-fe8a-49e0-9bfa-ded47dca4470 · Sep 25
$7,327 USD
View
Price last confirmed 42 days ago
13 more retailers have this diamond
Prices start from $2,867 USDSave up to $3,611 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
$2,867 USD