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Heart|Natural|GIA

1.51ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 1555675433

Certificate GIA 1555675433

Diamond specifications and retailer prices

From $4,584 AUD
HK$25,100 HKD
As of November 1, 2026
Save $6,107 AUD (57%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $10,692 AUD at NZ Jewellers · As of October 30, 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555675433. Listed at 20 retailers as of October 30, 2026, with prices from $4,584 to $10,692, a $6,107 spread on the same certified stone. NZ Jewellers lists it at $10,692. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 1555675433
Dimensions7.11 × 7.65 × 4.81 mm
L/W Ratio1.08
Top View
7.11 mm7.65 mm1.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 1555675433
Side View
Table 54.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 62.9%

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 1
Current: $10,692 AUD|Low: $4,548 AUD|High: $11,100 AUD|Avg: $6,611 AUD|-3.7%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 3, 2026
Retailer 16$4,584 AUD
Retailer 5$5,240 AUD
Retailer 9$5,399 AUD
Retailer 6$5,492 AUD
Retailer 10$5,665 AUD
Retailer 12$5,742 AUD
Retailer 8$5,782 AUD
Retailer 4$5,822 AUD
Retailer 3$6,137 AUD
Retailer 17$6,137 AUD
Retailer 19$6,137 AUD
Retailer 2$6,278 AUD
Retailer 7$6,491 AUD
Retailer 11$6,796 AUD
Retailer 13$6,943 AUD
Retailer 18$7,082 AUD
Retailer 15$7,543 AUD
Retailer 14$9,775 AUD
NZ Jewellers$10,692 AUD

28 data points across 19 retailers

20 retailers$4,584 AUD to $10,692 AUD

A
Cheapest Retailer
-
$4,584 AUD
HK$25,100 HKD
A
Retailer 2
-
$5,240 AUD
$3,672 USD
View
A
Retailer 3
-
$5,399 AUD
$3,784 USD
View
A
Retailer 4
-
$5,492 AUD
$3,849 USD
View
A
Retailer 5
-
$5,665 AUD
$3,970 USD
View
Final sale: no returns
A
Retailer 6
-
$5,742 AUD
£3,168 GBP
View
Retailer 7
-
$5,782 AUD
SGD 5,476 SGD
View
Price last confirmed 8 days ago
A
Retailer 8
-
$5,822 AUD
$4,080 USD
View
A
Retailer 9
-
$6,137 AUD
$4,301 USD
View
A
Retailer 10
-
$6,137 AUD
$4,301 USD
View
A
Retailer 11
-
$6,137 AUD
$4,301 USD
View
Retailer 12
-
$6,137 AUD
$4,301 USD
View
Price last confirmed 18 days ago
A
Retailer 13
-
$6,278 AUD
£3,464 GBP
View
A
Retailer 14
-
$6,491 AUD
$4,549 USD
View
Retailer 15
-
$6,796 AUD
View
Price last confirmed 24 days ago
A
Retailer 16
-
$6,943 AUD
€4,634 EUR
View
A
Retailer 17
-
$7,082 AUD
$4,963 USD
View
B+
Retailer 18
-
$7,543 AUD
ZAR 85,406 ZAR
View
B+
Retailer 19
-
$9,775 AUD
£5,394 GBP
View
Most Expensive
B+
NZ Jewellers
75921cc3-57e0-4f48-9a25-f38bd2c9e6a6 · Oct 30
$10,692 AUD
$7,493 USD
View
19 more retailers have this diamond
Prices start from $4,584 AUDSave up to $6,107 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
$4,584 AUD