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Heart|Natural|GIA

1.20ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 6422701827

Certificate GIA 6422701827

Diamond specifications and retailer prices

From $2,562 NZD
As of November 6, 2026
Save $5,190 NZD (67%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $7,751 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 H 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 6422701827. Listed at 12 retailers as of November 5, 2026, with prices from $2,562 to $7,751, a $5,190 spread on the same certified stone. NZ Jewellers lists it at $7,751. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6422701827
Dimensions6.93 × 6.41 × 4.10 mm
L/W Ratio1.08
Top View
6.93 mm6.41 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6422701827
Side View
Table 57.0%CrownGirdle: THN-XTKPavilionCulet: NoneDepth 59.2%

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: $7,751 NZD|Low: $2,354 NZD|High: $7,809 NZD|Avg: $3,839 NZD|-0.7%
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 7, 2026
Retailer 6$2,562 NZD
Retailer 11$2,922 NZD
Retailer 4$2,933 NZD
Retailer 7$3,083 NZD
Retailer 3$3,178 NZD
Retailer 10$3,325 NZD
Retailer 5$3,550 NZD
Retailer 9$3,572 NZD
Retailer 12$3,667 NZD
Retailer 8$4,315 NZD
Retailer 2$5,538 NZD
NZ Jewellers$7,751 NZD

33 data points across 12 retailers

12 retailers$2,562 NZD to $7,751 NZD

A
Cheapest Retailer
-
$2,562 NZD
A
Retailer 2
-
$2,922 NZD
View
A
Retailer 3
-
$2,933 NZD
View
Final sale: no returns
A
Retailer 4
-
$3,083 NZD
View
A
Retailer 5
-
$3,178 NZD
View
A
Retailer 6
-
$3,325 NZD
View
A
Retailer 7
-
$3,550 NZD
View
B+
Retailer 8
-
$3,572 NZD
View
B+
Retailer 9
-
$3,667 NZD
View
B+
Retailer 10
-
$4,315 NZD
View
B+
Retailer 11
-
$5,538 NZD
View
Most Expensive
B
NZ Jewellers
39e87a42-5e5f-4e0f-b712-0a3b21b70841 · Nov 5
$7,751 NZD
$4,297 USD
View
11 more retailers have this diamond
Prices start from $2,562 NZDSave up to $5,190 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