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Heart|Natural|GIA

1.23ct D SI1 Heart Natural Diamond

EX • D/SI1 • GIA 6561386466

Certificate GIA 6561386466

Diamond specifications and retailer prices

From $5,745 NZD
As of November 6, 2026
Save $5,098 NZD (47%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $10,843 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6561386466. Listed at 5 retailers as of November 5, 2026, with prices from $5,745 to $10,843, a $5,098 spread on the same certified stone. NZ Jewellers lists it at $10,843. 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6561386466
Dimensions6.67 × 7.56 × 4.09 mm
L/W Ratio1.13
Key to symbols
Crystal, Feather, Needle
Top View
6.67 mm7.56 mm1.23 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6561386466
Side View
Table 54.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 54.1%

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: $10,843 NZD|Low: $4,932 NZD|High: $10,856 NZD|Avg: $7,793 NZD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2$5,745 NZD
Retailer 5$6,007 NZD
Retailer 3$6,038 NZD
Retailer 4$10,380 NZD
NZ Jewellers$10,843 NZD

34 data points across 5 retailers

5 retailers$5,745 NZD to $10,843 NZD

B+
Cheapest Retailer
-
$5,745 NZD
Final sale: no returns
B+
Retailer 2
-
$6,007 NZD
View
B+
Retailer 3
-
$6,038 NZD
View
B
Retailer 4
-
$10,380 NZD
View
Most Expensive
B
NZ Jewellers
5c9e04d2-03eb-425e-a8c7-be5f950f35cb · Nov 5
$10,843 NZD
$6,011 USD
View
4 more retailers have this diamond
Prices start from $5,745 NZDSave up to $5,098 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+
1.23ct Heart
$5,745 NZD