CaratHunter
Plans
Heart|Natural|GIA

1.20ct J SI2 Heart Natural Diamond

EX • J/SI2 • GIA 3555609127

Certificate GIA 3555609127

Diamond specifications and retailer prices

From $2,657 NZD
As of November 6, 2026
Save $5,949 NZD (69%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $8,606 NZD at NZ Jewellers · As of November 5, 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 3555609127. Listed at 8 retailers as of November 5, 2026, with prices from $2,657 to $8,606, a $5,949 spread on the same certified stone. NZ Jewellers lists it at $8,606. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 3555609127
Dimensions6.53 × 7.35 × 4.27 mm
L/W Ratio1.13
Girdle conditionThick
Top View
6.53 mm7.35 mm1.20 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 3555609127
Side View
Table 58.0%CrownGirdle: MediumPavilionCulet: NoneDepth 58.1%

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: $8,606 NZD|Low: $2,657 NZD|High: $8,606 NZD|Avg: $4,584 NZD|+6.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 2$2,657 NZD
Retailer 7$2,816 NZD
Retailer 6$3,187 NZD
Retailer 4$3,776 NZD
Retailer 5$3,831 NZD
Retailer 3$4,791 NZD
Retailer 8$6,164 NZD
NZ Jewellers$8,606 NZD

35 data points across 8 retailers

8 retailers$2,657 NZD to $8,606 NZD

A
Cheapest Retailer
-
$2,657 NZD
A
Retailer 2
-
$2,816 NZD
View
Final sale: no returns
A
Retailer 3
-
$3,187 NZD
View
B+
Retailer 4
-
$3,776 NZD
View
B+
Retailer 5
-
$3,831 NZD
View
B+
Retailer 6
-
$4,791 NZD
View
B
Retailer 7
-
$6,164 NZD
View
Most Expensive
C
NZ Jewellers
09864021-c292-4cb7-a6d4-cf127ea330cb · Nov 5
$8,606 NZD
$4,771 USD
View
7 more retailers have this diamond
Prices start from $2,657 NZDSave up to $5,949 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
$2,657 NZD