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Heart|Natural|GIA

1.51ct J SI2 Heart Natural Diamond

EX • J/SI2 • GIA 5556155608

Certificate GIA 5556155608

Diamond specifications and retailer prices

From $4,282 NZD
As of November 6, 2026
Save $3,143 NZD (42%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $7,425 NZD at Wholesale Diamonds Direct · As of November 6, 2026
View at Wholesale Diamonds Direct

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 SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5556155608. Listed at 8 retailers as of November 6, 2026, with prices from $4,282 to $7,425, a $3,143 spread on the same certified stone. Wholesale Diamonds Direct lists it at $7,425. 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
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle42.26°
Pavilion angle37.79°
OriginNatural
Grading LabGIA
CertificateGIA 5556155608
Dimensions6.76 × 7.89 × 4.70 mm
L/W Ratio1.17
Top View
6.76 mm7.89 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5556155608
Side View
Table 60.0%Crown 42.26°Girdle: MED-THKPavilion 37.79°Culet: NoneDepth 59.6%

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 6
Current: $5,520 NZD|Low: $3,215 NZD|High: $8,084 NZD|Avg: $5,126 NZD|-6.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Wholesale Diamonds Direct
November 6, 2026
Retailer 9$3,215 NZD
Retailer 4$4,052 NZD
Retailer 3$4,282 NZD
Retailer 7$4,328 NZD
Retailer 2$4,708 NZD
Retailer 6$4,791 NZD
Retailer 5$5,213 NZD
Retailer 1$5,520 NZD
Retailer 8$6,281 NZD
Wholesale Diamonds Direct$7,425 NZD

26 data points across 10 retailers

8 retailers$4,282 NZD to $7,425 NZD

A
Cheapest Retailer
-
$4,282 NZD
A
Retailer 2
-
$4,328 NZD
View
A
Retailer 3
-
$4,708 NZD
View
A
Retailer 4
-
$4,791 NZD
View
A
Retailer 5
-
$4,979 NZD
View
A
Retailer 6
-
$5,213 NZD
View
A
Retailer 7
-
$5,520 NZD
View
Most Expensive
B+
Wholesale Diamonds Direct
675330071 · Nov 6
$7,425 NZD
$4,116 USD
View
7 more retailers have this diamond
Prices start from $4,282 NZDSave up to $3,143 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
$4,282 NZD