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Heart|Natural|GIA

1.25ct H SI2 Heart Natural Diamond

EX • H/SI2 • GIA 1553638557

Certificate GIA 1553638557

Diamond specifications and retailer prices

From $2,524 AUD
As of November 4, 2026
Save $4,232 AUD (63%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,756 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.25ct natural heart diamond

This 1.25ct natural heart sits in the one-and-a-quarter to one-and-a-half carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1553638557. Listed at 14 retailers as of November 4, 2026, with prices from $2,524 to $6,756, a $4,232 spread on the same certified stone. NZ Jewellers lists it at $6,756. 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

1.25
Carat
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.98°
OriginNatural
Grading LabGIA
CertificateGIA 1553638557
Dimensions6.63 × 7.51 × 4.22 mm
L/W Ratio1.13
Culet sizeNone
Key to symbols
Twinning Wisp, Cloud, Crystal, Feather, Needle, Indented Natural, Natural
Top View
6.63 mm7.51 mm1.25 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1553638557
Side View
Table 58.0%Crown 36.98°Girdle: MED-VTKPavilionCulet: NoneDepth 56.2%

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 4
Current: $6,756 AUD|Low: $2,524 AUD|High: $6,756 AUD|Avg: $3,477 AUD
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 6, 2026
Retailer 14$2,524 AUD
Retailer 4$2,556 AUD
Retailer 2$2,723 AUD
Retailer 6$2,770 AUD
Retailer 12$2,770 AUD
Retailer 11$2,861 AUD
Retailer 3$2,882 AUD
Retailer 5$2,898 AUD
Retailer 13$2,969 AUD
Retailer 7$3,007 AUD
Retailer 10$3,035 AUD
Retailer 9$3,196 AUD
Retailer 8$4,877 AUD
NZ Jewellers$6,756 AUD

42 data points across 14 retailers

14 retailers$2,524 AUD to $6,756 AUD

A
Cheapest Retailer
-
$2,524 AUD
A
Retailer 2
-
$2,556 AUD
View
Final sale: no returns
A
Retailer 3
-
$2,723 AUD
View
A
Retailer 4
-
$2,770 AUD
View
Retailer 5
-
$2,770 AUD
View
Price last confirmed 8 days ago
A
Retailer 6
-
$2,861 AUD
View
A
Retailer 7
-
$2,882 AUD
View
A
Retailer 8
-
$2,898 AUD
View
A
Retailer 9
-
$2,969 AUD
View
A
Retailer 10
-
$3,007 AUD
View
A
Retailer 11
-
$3,035 AUD
View
A
Retailer 12
-
$3,196 AUD
View
Retailer 13
-
$4,877 AUD
View
Price last confirmed 8 days ago
Most Expensive
B
NZ Jewellers
b6e459be-f91b-4c67-87a6-031833ab505e · Nov 5
$6,756 AUD
$4,642 USD
View
13 more retailers have this diamond
Prices start from $2,524 AUDSave up to $4,232 AUD

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
1.25ct Heart
$2,524 AUD