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Heart|Natural|GIA

1.23ct K SI2 Heart Natural Diamond

EX • K/SI2 • GIA 1246072305

Certificate GIA 1246072305

Diamond specifications and retailer prices

From $2,286 NZD
As of November 6, 2026
Save $5,298 NZD (70%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $7,584 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.23ct natural heart diamond

This 1.23ct natural heart sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1246072305. Listed at 11 retailers as of November 5, 2026, with prices from $2,286 to $7,584, a $5,298 spread on the same certified stone. NZ Jewellers lists it at $7,584. 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

1.23
Carat
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceStrong
Pavilion angle38.99°
OriginNatural
Grading LabGIA
CertificateGIA 1246072305
Dimensions6.30 × 7.36 × 4.39 mm
L/W Ratio1.17
Key to symbols
Feather, Twinning Wisp
Top View
6.30 mm7.36 mm1.23 ctK / SI2
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceStrong
CertificateGIA 1246072305
Side View
Table 61.0%CrownGirdle: STK-VTKPavilion 38.99°Culet: NoneDepth 59.7%

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: $7,584 NZD|Low: $2,286 NZD|High: $8,128 NZD|Avg: $4,085 NZD|-6.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11$2,286 NZD
Retailer 10$2,939 NZD
Retailer 8$3,108 NZD
Retailer 4$3,171 NZD
Retailer 2$3,180 NZD
Retailer 7$3,252 NZD
Retailer 3$3,451 NZD
Retailer 6$3,666 NZD
Retailer 5$4,773 NZD
Retailer 9$5,448 NZD
NZ Jewellers$7,584 NZD

30 data points across 11 retailers

11 retailers$2,286 NZD to $7,584 NZD

A
Cheapest Retailer
-
$2,286 NZD
B+
Retailer 2
-
$2,939 NZD
View
A
Retailer 3
-
$3,108 NZD
View
B+
Retailer 4
-
$3,171 NZD
View
B+
Retailer 5
-
$3,180 NZD
View
B+
Retailer 6
-
$3,252 NZD
View
B+
Retailer 7
-
$3,451 NZD
View
B+
Retailer 8
-
$3,666 NZD
View
B+
Retailer 9
-
$4,773 NZD
View
B
Retailer 10
-
$5,448 NZD
View
Most Expensive
B
NZ Jewellers
fdde17d1-cee7-4b88-852b-47df3ef7bc74 · Nov 5
$7,584 NZD
$4,204 USD
View
10 more retailers have this diamond
Prices start from $2,286 NZDSave up to $5,298 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
1.23ct Heart
$2,286 NZD