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Heart|Natural|GIA

1.20ct G SI1 Heart Natural Diamond

EX • G/SI1 • GIA 1553482029

Certificate GIA 1553482029

Diamond specifications and retailer prices

From $3,671 NZD
As of November 6, 2026
Save $4,645 NZD (56%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $8,316 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 G 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 1553482029. Listed at 5 retailers as of November 5, 2026, with prices from $3,671 to $8,316, a $4,645 spread on the same certified stone. NZ Jewellers lists it at $8,316. 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
G
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1553482029
Dimensions6.58 × 7.27 × 4.20 mm
L/W Ratio1.10
Key to symbols
Crystal, Feather, Twinning Wisp, Needle
Top View
6.58 mm7.27 mm1.20 ctG / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1553482029
Side View
Table 55.0%CrownGirdle: STK-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: $8,316 NZD|Low: $3,229 NZD|High: $9,373 NZD|Avg: $5,701 NZD|-11.3%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 5$3,671 NZD
Retailer 4$4,015 NZD
Retailer 3$4,937 NZD
Retailer 6$5,127 NZD
Retailer 2$6,929 NZD
NZ Jewellers$8,316 NZD

28 data points across 6 retailers

5 retailers$3,671 NZD to $8,316 NZD

A
Cheapest Retailer
-
$3,671 NZD
Final sale: no returns
A
Retailer 2
-
$4,015 NZD
View
B+
Retailer 3
-
$4,937 NZD
View
B
Retailer 4
-
$6,929 NZD
View
Most Expensive
B
NZ Jewellers
5c92c21c-43fd-4a01-9bfd-c14e597894f5 · Nov 5
$8,316 NZD
$4,610 USD
View
4 more retailers have this diamond
Prices start from $3,671 NZDSave up to $4,645 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
$3,671 NZD