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Heart|Natural|GIA

1.20ct I SI1 Heart Natural Diamond

ID • I/SI1 • GIA 6515647551

Certificate GIA 6515647551

Diamond specifications and retailer prices

From $3,828 NZD
As of November 6, 2026
Save $5,740 NZD (60%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $9,568 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6515647551. Listed at 15 retailers as of November 5, 2026, with prices from $3,828 to $9,568, a $5,740 spread on the same certified stone. NZ Jewellers lists it at $9,568. 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
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6515647551
Dimensions7.54 × 6.63 × 4.31 mm
L/W Ratio1.14
Top View
7.54 mm6.63 mm1.20 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6515647551
Side View
Table 64.0%CrownGirdle: MED-STKPavilionCulet: NoneDepth 57.2%

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: $9,568 NZD|Low: $3,828 NZD|High: $9,622 NZD|Avg: $5,146 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
November 7, 2026
Retailer 4$3,828 NZD
Retailer 8$3,987 NZD
Retailer 11$4,147 NZD
Retailer 5$4,169 NZD
Retailer 3$4,237 NZD
Retailer 13$4,311 NZD
Retailer 12$4,338 NZD
Retailer 9$4,439 NZD
Retailer 14$4,784 NZD
Retailer 7$4,829 NZD
Retailer 6$5,183 NZD
Retailer 10$5,585 NZD
Retailer 2$7,973 NZD
NZ Jewellers$9,568 NZD

33 data points across 14 retailers

15 retailers$3,828 NZD to $9,568 NZD

A
Cheapest Retailer
-
$3,828 NZD
Final sale: no returns
A
Retailer 2
-
$3,987 NZD
View
B+
Retailer 3
-
$4,147 NZD
View
Retailer 4
-
$4,169 NZD
View
Price last confirmed 9 days ago
B+
Retailer 5
-
$4,237 NZD
View
B+
Retailer 6
-
$4,311 NZD
View
B+
Retailer 7
-
$4,338 NZD
View
B+
Retailer 8
-
$4,398 NZD
View
B+
Retailer 9
-
$4,439 NZD
View
B+
Retailer 10
-
$4,784 NZD
View
B+
Retailer 11
-
$4,829 NZD
View
Retailer 12
-
$5,183 NZD
View
Price last confirmed 31 days ago
B+
Retailer 13
-
$5,585 NZD
View
B
Retailer 14
-
$7,973 NZD
View
Most Expensive
B
NZ Jewellers
0295613a-2162-44ef-ae4c-6b601a5228dc · Nov 5
$9,568 NZD
$5,304 USD
View
14 more retailers have this diamond
Prices start from $3,828 NZDSave up to $5,740 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
$3,828 NZD