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Heart|Natural|GIA

1.20ct I SI1 Heart Natural Diamond

VG • I/SI1 • GIA 1545779961

Certificate GIA 1545779961

Diamond specifications and retailer prices

From $3,931 NZD
As of November 6, 2026
Save $7,100 NZD (64%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $11,031 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 1545779961. Listed at 17 retailers as of November 5, 2026, with prices from $3,931 to $11,031, a $7,100 spread on the same certified stone. NZ Jewellers lists it at $11,031. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.20
Carat
I
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1545779961
Dimensions6.34 × 7.19 × 4.40 mm
L/W Ratio1.13
Culet sizeNone
Key to symbols
Cloud, Crystal, Feather, Needle
Top View
6.34 mm7.19 mm1.20 ctI / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1545779961
Side View
Table 59.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 61.2%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $11,031 NZD|Low: $3,931 NZD|High: $11,031 NZD|Avg: $5,787 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
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 6, 2026
Retailer 6$3,931 NZD
Retailer 4$4,131 NZD
Retailer 13$4,780 NZD
Retailer 15$4,780 NZD
Retailer 14$4,964 NZD
Retailer 5$5,033 NZD
Retailer 2$5,118 NZD
Retailer 3$5,186 NZD
Retailer 8$5,466 NZD
Retailer 9$5,466 NZD
Retailer 16$5,515 NZD
Retailer 7$5,646 NZD
Retailer 17$5,991 NZD
Retailer 10$6,142 NZD
Retailer 11$6,440 NZD
Retailer 12$8,799 NZD
NZ Jewellers$11,031 NZD

37 data points across 17 retailers

17 retailers$3,931 NZD to $11,031 NZD

B+
Cheapest Retailer
-
$3,931 NZD
B+
Retailer 2
-
$4,131 NZD
View
B
Retailer 3
-
$4,780 NZD
View
Retailer 4
-
$4,780 NZD
View
Price last confirmed 9 days ago
B
Retailer 5
-
$4,964 NZD
View
B
Retailer 6
-
$5,033 NZD
View
B
Retailer 7
-
$5,118 NZD
View
B
Retailer 8
-
$5,186 NZD
View
B
Retailer 9
-
$5,466 NZD
View
B
Retailer 10
-
$5,466 NZD
View
B
Retailer 11
-
$5,515 NZD
View
B
Retailer 12
-
$5,646 NZD
View
B
Retailer 13
-
$5,991 NZD
View
B
Retailer 14
-
$6,142 NZD
View
B
Retailer 15
-
$6,440 NZD
View
B
Retailer 16
-
$8,799 NZD
View
Most Expensive
C
NZ Jewellers
68941107-28b9-4f84-864d-21a79f812332 · Nov 5
$11,031 NZD
$6,115 USD
View
16 more retailers have this diamond
Prices start from $3,931 NZDSave up to $7,100 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.

B+
1.20ct Heart
$3,931 NZD