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Heart|Natural|GIA

1.57ct K SI2 Heart Natural Diamond

EX • K/SI2 • GIA 6501528525

Certificate GIA 6501528525

Diamond specifications and retailer prices

From $4,659 AUD
As of November 1, 2026
Save $4,848 AUD (51%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $9,507 AUD at NZ Jewellers · As of November 3, 2026
View at NZ Jewellers

About this 1.57ct natural heart diamond

This 1.57ct natural heart sits in the one-and-a-half to two 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 6501528525. Listed at 10 retailers as of November 1, 2026, with prices from $4,659 to $9,507, a $4,848 spread on the same certified stone. NZ Jewellers lists it at $9,507. 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

1.57
Carat
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6501528525
Dimensions6.75 × 8.42 × 4.80 mm
L/W Ratio1.25
Top View
6.75 mm8.42 mm1.57 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6501528525
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 57.0%

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 1
Current: $9,507 AUD|Low: $4,659 AUD|High: $9,507 AUD|Avg: $6,327 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 3, 2026
Retailer 12$4,659 AUD
Retailer 6$4,845 AUD
Retailer 13$4,884 AUD
Retailer 9$5,456 AUD
Retailer 10$5,456 AUD
Retailer 8$5,667 AUD
Retailer 3$5,669 AUD
Retailer 2$5,702 AUD
Retailer 4$5,883 AUD
Retailer 11$6,296 AUD
Retailer 14$6,493 AUD
Retailer 5$8,815 AUD
Retailer 7$9,124 AUD
NZ Jewellers$9,507 AUD

39 data points across 14 retailers

10 retailers$4,659 AUD to $9,507 AUD

A
Cheapest Retailer
-
$4,659 AUD
A
Retailer 2
-
$4,845 AUD
View
Retailer 3
-
$5,456 AUD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$5,456 AUD
View
B+
Retailer 5
-
$5,667 AUD
View
B+
Retailer 6
-
$5,669 AUD
View
B+
Retailer 7
-
$5,702 AUD
View
B+
Retailer 8
-
$6,296 AUD
View
B
Retailer 9
-
$9,124 AUD
View
Most Expensive
B
NZ Jewellers
8fcb2d63-570f-4727-856d-5667d7af08bb · Nov 3
$9,507 AUD
$6,532 USD
View
9 more retailers have this diamond
Prices start from $4,659 AUDSave up to $4,848 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
1.57ct Heart
$4,659 AUD