Heart|Natural|GIA

1.23ct K SI2 Heart Natural Diamond

EX • K/SI2 • GIA 1246072305

Certificate GIA 1246072305

Diamond specifications and retailer prices

From $1,267 USD
As of November 6, 2026
Save $2,937 USD (70%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,204 USD 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 $1,267 to $4,204, a $2,937 spread on the same certified stone. NZ Jewellers lists it at $4,204. 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
Color
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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $4,204 USD|Low: $1,267 USD|High: $4,506 USD|Avg: $2,265 USD|-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$1,267 USD
Retailer 10$1,629 USD
Retailer 8$1,723 USD
Retailer 4$1,758 USD
Retailer 2$1,763 USD
Retailer 7$1,803 USD
Retailer 3$1,913 USD
Retailer 6$2,032 USD
Retailer 5$2,646 USD
Retailer 9$3,020 USD
NZ Jewellers$4,204 USD

30 data points across 11 retailers

11 retailers$1,267 USD to $4,204 USD

A
Cheapest Retailer
-
$1,267 USD
B+
Retailer 2
-
$1,629 USD
View
A
Retailer 3
-
$1,723 USD
View
B+
Retailer 4
-
$1,758 USD
View
B+
Retailer 5
-
$1,763 USD
View
B+
Retailer 6
-
$1,803 USD
View
B+
Retailer 7
-
$1,913 USD
View
B+
Retailer 8
-
$2,032 USD
View
B+
Retailer 9
-
$2,646 USD
View
B
Retailer 10
-
$3,020 USD
View
Most Expensive
B
NZ Jewellers
fdde17d1-cee7-4b88-852b-47df3ef7bc74 · Nov 5
$4,204 USD
View
10 more retailers have this diamond
Prices start from $1,267 USDSave up to $2,937 USD

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
$1,267 USD