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Heart|Natural|GIA

1.20ct K SI1 Heart Natural Diamond

EX • K/SI1 • GIA 6233852681

Certificate GIA 6233852681

Diamond specifications and retailer prices

From $2,100 NZD
As of November 6, 2026
Save $3,032 NZD (59%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $6,631 NZD at NZ Jewellers · As of September 29, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6233852681. Listed at 9 retailers as of November 4, 2026, with a 144% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle38.03°
OriginNatural
Grading LabGIA
CertificateGIA 6233852681
Dimensions6.29 × 7.39 × 4.29 mm
L/W Ratio1.17
Top View
6.29 mm7.39 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6233852681
Side View
Table 62.0%CrownGirdle: STK-VTKPavilion 38.03°Culet: NoneDepth 58.0%

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: $2,904 NZD|Low: $2,008 NZD|High: $5,424 NZD|Avg: $3,600 NZD|+2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 6, 2026
Retailer 2$2,100 NZD
Retailer 5$2,747 NZD
Retailer 1$2,904 NZD
Retailer 6$2,998 NZD
Retailer 8$3,848 NZD
Retailer 7$4,268 NZD
Retailer 4$5,080 NZD
Retailer 3$5,132 NZD

26 data points across 8 retailers

9 retailers$2,100 NZD to $5,132 NZD

A
Cheapest Retailer
-
$2,100 NZD
A
Retailer 2
-
$2,747 NZD
View
Retailer 3
-
$2,845 NZD
View
Price last confirmed 36 days ago
A
Retailer 4
-
$2,904 NZD
View
A
Retailer 5
-
$2,998 NZD
View
Retailer 6
-
$3,067 NZD
View
Price last confirmed 36 days ago
B+
Retailer 7
-
$5,080 NZD
View
B
Retailer 8
-
$5,132 NZD
View
Most Expensive
NZ Jewellers
09b9ea23-6187-426f-9559-f62db5f6cb1f · Sep 29
$6,631 NZD
$3,676 USD
View
Price last confirmed 37 days ago
8 more retailers have this diamond
Prices start from $2,100 NZDSave up to $3,032 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
$2,100 NZD