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Heart|Natural|GIA

1.53ct K SI1 Heart Natural Diamond

EX • K/SI1 • GIA 1543950076

Certificate GIA 1543950076

Diamond specifications and retailer prices

From $3,599 AUD
As of November 6, 2026
Save $4,241 AUD (54%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $8,763 AUD at NZ Jewellers · As of September 20, 2026
View at NZ Jewellers

About this 1.53ct natural heart diamond

This 1.53ct natural heart sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1543950076. Listed at 11 retailers as of November 4, 2026, with a 118% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.53
Carat
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1543950076
Dimensions7.96 × 7.05 × 4.54 mm
L/W Ratio1.13
Girdle conditionThick
Top View
7.96 mm7.05 mm1.53 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1543950076
Side View
Table 58.0%CrownGirdle: MediumPavilionCulet: NoneDepth 57.0%

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: $3,599 AUD|Low: $3,599 AUD|High: $8,178 AUD|Avg: $5,091 AUD|-4.8%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 1$3,599 AUD
Retailer 7$4,173 AUD
Retailer 8$4,328 AUD
Retailer 6$4,555 AUD
Retailer 3$4,864 AUD
Retailer 9$4,909 AUD
Retailer 2$5,474 AUD
Retailer 4$5,737 AUD
Retailer 5$7,840 AUD

34 data points across 9 retailers

11 retailers$3,599 AUD to $7,840 AUD

A
Cheapest Retailer
-
$3,599 AUD
A
Retailer 2
-
$4,173 AUD
View
A
Retailer 3
-
$4,328 AUD
View
A
Retailer 4
-
$4,555 AUD
View
A
Retailer 5
-
$4,864 AUD
View
B+
Retailer 6
-
$4,909 AUD
View
B+
Retailer 7
-
$5,474 AUD
View
B+
Retailer 8
-
$5,737 AUD
View
B
Retailer 9
-
$7,840 AUD
View
Retailer 10
-
$8,419 AUD
View
Price last confirmed 31 days ago
Most Expensive
NZ Jewellers
01749aa1-057d-4017-871f-461a30d1f7d5 · Sep 20
$8,763 AUD
$6,021 USD
View
Price last confirmed 46 days ago
10 more retailers have this diamond
Prices start from $3,599 AUDSave up to $4,241 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
1.53ct Heart
$3,599 AUD