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Heart|Natural|GIA

1.51ct F SI2 Heart Natural Diamond

EX • F/SI2 • GIA 2546905514

Certificate GIA 2546905514

Diamond specifications and retailer prices

From $4,359 AUD
As of November 6, 2026
Save $5,282 AUD (55%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $10,732 AUD at NZ Jewellers · As of October 21, 2026
View at NZ Jewellers

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2546905514. Listed at 11 retailers as of November 2, 2026, with a 121% 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

1.51
Carat
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 2546905514
Dimensions6.86 × 7.86 × 4.65 mm
L/W Ratio1.15
Top View
6.86 mm7.86 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2546905514
Side View
Table 60.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 59.1%

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: $10,732 AUD|Low: $4,302 AUD|High: $10,732 AUD|Avg: $6,575 AUD
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 6$4,359 AUD
Retailer 2$4,385 AUD
Retailer 9$4,628 AUD
Retailer 7$4,839 AUD
Retailer 8$5,162 AUD
Retailer 3$5,861 AUD
Retailer 10$6,159 AUD
Retailer 11$6,159 AUD
Retailer 4$6,616 AUD
Retailer 5$9,641 AUD
NZ Jewellers$10,732 AUD

45 data points across 11 retailers

11 retailers$4,359 AUD to $9,641 AUD

A
Cheapest Retailer
-
$4,359 AUD
A
Retailer 2
-
$4,385 AUD
View
A
Retailer 3
-
$4,628 AUD
View
Final sale: no returns
A
Retailer 4
-
$4,839 AUD
View
A
Retailer 5
-
$5,162 AUD
View
Retailer 6
-
$5,861 AUD
View
Price last confirmed 12 days ago
Retailer 7
-
$6,159 AUD
View
Price last confirmed 16 days ago
Retailer 8
-
$6,159 AUD
View
Price last confirmed 16 days ago
A
Retailer 9
-
$6,616 AUD
View
B+
Retailer 10
-
$9,641 AUD
View
Most Expensive
NZ Jewellers
2e8e5b83-7152-4758-8d05-1ee9688ffa17 · Oct 21
$10,732 AUD
$7,374 USD
View
Price last confirmed 16 days ago
10 more retailers have this diamond
Prices start from $4,359 AUDSave up to $5,282 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
1.51ct Heart
$4,359 AUD