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Heart|Natural|GIA

1.20ct H SI1 Heart Natural Diamond

EX • H/SI1 • GIA 6555455676

Certificate GIA 6555455676

Diamond specifications and retailer prices

From $3,947 NZD
As of November 6, 2026
Save $7,028 NZD (64%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $10,975 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 6555455676. Listed at 25 retailers as of November 5, 2026, with prices from $3,947 to $10,975, a $7,028 spread on the same certified stone. NZ Jewellers lists it at $10,975. 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555455676
Dimensions6.73 × 7.43 × 4.26 mm
L/W Ratio1.10
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
6.73 mm7.43 mm1.20 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6555455676
Side View
Table 63.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 57.3%

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: $10,975 NZD|Low: $3,947 NZD|High: $11,036 NZD|Avg: $6,360 NZD|-0.6%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 7, 2026
Retailer 7$3,947 NZD
Retailer 13$4,120 NZD
Retailer 18$4,659 NZD
Retailer 19$4,712 NZD
Retailer 9$4,845 NZD
Retailer 14$5,092 NZD
Retailer 3$5,249 NZD
Retailer 11$5,278 NZD
Retailer 5$5,451 NZD
Retailer 16$5,496 NZD
Retailer 8$5,506 NZD
Retailer 12$5,556 NZD
Retailer 4$5,679 NZD
Retailer 6$6,057 NZD
Retailer 15$6,110 NZD
Retailer 17$6,407 NZD
Retailer 2$8,733 NZD
Retailer 10$10,583 NZD
NZ Jewellers$10,975 NZD

23 data points across 19 retailers

25 retailers$3,947 NZD to $10,975 NZD

A
Cheapest Retailer
-
$3,947 NZD
A
Retailer 2
-
$4,120 NZD
View
B+
Retailer 3
-
$4,659 NZD
View
B+
Retailer 4
-
$4,712 NZD
View
B+
Retailer 5
-
$4,845 NZD
View
Final sale: no returns
B+
Retailer 6
-
$4,867 NZD
View
B+
Retailer 7
-
$4,948 NZD
View
B+
Retailer 8
-
$4,952 NZD
View
B+
Retailer 9
-
$5,092 NZD
View
B+
Retailer 10
-
$5,249 NZD
View
Retailer 11
-
$5,278 NZD
View
Price last confirmed 9 days ago
Retailer 12
-
$5,278 NZD
View
Price last confirmed 22 days ago
B+
Retailer 13
-
$5,451 NZD
View
B+
Retailer 14
-
$5,496 NZD
View
B+
Retailer 15
-
$5,506 NZD
View
B+
Retailer 16
-
$5,520 NZD
View
B+
Retailer 17
-
$5,556 NZD
View
B+
Retailer 18
-
$5,679 NZD
View
Retailer 19
-
$5,946 NZD
View
Price last confirmed 31 days ago
B+
Retailer 20
-
$6,057 NZD
View
B
Retailer 21
-
$6,110 NZD
View
B
Retailer 22
-
$6,407 NZD
View
B
Retailer 23
-
$8,733 NZD
View
Retailer 24
-
$10,583 NZD
View
Price last confirmed 10 days ago
Most Expensive
B
NZ Jewellers
6391fe8e-3615-4d57-b729-822588072907 · Nov 5
$10,975 NZD
$6,084 USD
View
24 more retailers have this diamond
Prices start from $3,947 NZDSave up to $7,028 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
$3,947 NZD