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Heart|Natural|GIA

1.51ct F SI2 Heart Natural Diamond

EX • F/SI2 • GIA 6542728816

Certificate GIA 6542728816

Diamond specifications and retailer prices

From $5,030 AUD
As of November 6, 2026
Save $5,520 AUD (52%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $12,329 AUD at Queensmith · As of October 28, 2026
View at Queensmith

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 6542728816. Listed at 16 retailers as of November 4, 2026, with a 110% 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
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6542728816
Dimensions7.06 × 8.02 × 4.60 mm
L/W Ratio1.14
Top View
7.06 mm8.02 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6542728816
Side View
Table 62.0%CrownGirdle: THN-VTKPavilionCulet: NoneDepth 57.4%

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: $12,329 AUD|Low: $4,973 AUD|High: $12,569 AUD|Avg: $7,514 AUD|-1.9%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 6$5,030 AUD
Retailer 2$5,352 AUD
Retailer 7$6,130 AUD
Retailer 9$6,391 AUD
Retailer 4$6,469 AUD
Retailer 3$6,539 AUD
Retailer 8$6,859 AUD
Retailer 5$10,550 AUD
Queensmith$12,329 AUD

41 data points across 9 retailers

16 retailers$5,030 AUD to $10,550 AUD

A
Cheapest Retailer
-
$5,030 AUD
A
Retailer 2
-
$5,352 AUD
View
A
Retailer 3
-
$6,130 AUD
View
Final sale: no returns
A
Retailer 4
-
$6,391 AUD
View
A
Retailer 5
-
$6,469 AUD
View
A
Retailer 6
-
$6,539 AUD
View
Retailer 7
-
$6,642 AUD
View
Price last confirmed 22 days ago
Retailer 8
-
$6,642 AUD
View
Price last confirmed 22 days ago
Retailer 9
-
$6,642 AUD
View
Price last confirmed 20 days ago
A
Retailer 10
-
$6,689 AUD
View
A
Retailer 11
-
$6,859 AUD
View
B+
Retailer 12
-
$7,054 AUD
View
Retailer 13
-
$7,664 AUD
View
Price last confirmed 19 days ago
B+
Retailer 14
-
$10,550 AUD
View
Retailer 15
-
$11,572 AUD
View
Price last confirmed 20 days ago
Most Expensive
Queensmith
6542728816 · Oct 28
$12,329 AUD
£6,670 GBP
View
Price last confirmed 9 days ago
15 more retailers have this diamond
Prices start from $5,030 AUDSave up to $5,520 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
$5,030 AUD