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Heart|Natural|GIA

1.20ct J SI2 Heart Natural Diamond

ID • J/SI2 • GIA 1539286592

Certificate GIA 1539286592

Diamond specifications and retailer prices

From $2,562 NZD
As of November 6, 2026
Save $3,348 NZD (57%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,229 NZD at NZ Jewellers · As of October 18, 2026
View at NZ Jewellers

About this 1.2ct natural heart diamond

This 1.2ct natural heart sits in the classic one-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 1539286592. Listed at 15 retailers as of November 1, 2026, with a 131% 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

1.20
Carat
J
Colour
SI2
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1539286592
Dimensions7.36 × 6.60 × 4.26 mm
L/W Ratio1.12
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Feather, Twinning Wisp, Crystal, Cavity, Needle, Indented Natural
Top View
7.36 mm6.60 mm1.20 ctJ / SI2
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 1539286592
Side View
Table 63.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 57.8%

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: $8,229 NZD|Low: $2,562 NZD|High: $8,314 NZD|Avg: $4,000 NZD|-1.0%
NZ Jewellers
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 8$2,562 NZD
Retailer 2$2,688 NZD
Retailer 10$3,095 NZD
Retailer 6$3,200 NZD
Retailer 3$3,373 NZD
Retailer 7$3,500 NZD
Retailer 12$3,530 NZD
Retailer 9$3,601 NZD
Retailer 5$3,642 NZD
Retailer 4$3,893 NZD
Retailer 11$5,910 NZD
NZ Jewellers$8,229 NZD

35 data points across 12 retailers

15 retailers$2,562 NZD to $5,910 NZD

A
Cheapest Retailer
-
$2,562 NZD
A
Retailer 2
-
$2,688 NZD
View
A
Retailer 3
-
$3,095 NZD
View
Final sale: no returns
A
Retailer 4
-
$3,200 NZD
View
B+
Retailer 5
-
$3,240 NZD
View
Retailer 6
-
$3,373 NZD
View
Price last confirmed 21 days ago
Retailer 7
-
$3,373 NZD
View
Price last confirmed 19 days ago
B+
Retailer 8
-
$3,500 NZD
View
Retailer 9
-
$3,530 NZD
View
Price last confirmed 21 days ago
B+
Retailer 10
-
$3,550 NZD
View
B+
Retailer 11
-
$3,601 NZD
View
B+
Retailer 12
-
$3,642 NZD
View
Retailer 13
-
$3,893 NZD
View
Price last confirmed 18 days ago
B
Retailer 14
-
$5,910 NZD
View
Most Expensive
NZ Jewellers
258dd2b5-1842-4f77-85bb-64125eaa28cf · Oct 18
$8,229 NZD
$4,562 USD
View
Price last confirmed 19 days ago
14 more retailers have this diamond
Prices start from $2,562 NZDSave up to $3,348 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
1.20ct Heart
$2,562 NZD