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Heart|Natural|GIA

1.51ct F SI2 Heart Natural Diamond

EX • F/SI2 • GIA 2526686872

Certificate GIA 2526686872

Diamond specifications and retailer prices

From $5,030 AUD
As of November 6, 2026
Save $5,408 AUD (52%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $12,264 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 2526686872. Listed at 15 retailers as of November 4, 2026, with a 108% 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
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2526686872
Dimensions7.98 × 7.03 × 4.71 mm
L/W Ratio1.14
Top View
7.98 mm7.03 mm1.51 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2526686872
Side View
Table 64.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 59.0%

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: $12,264 AUD|Low: $4,973 AUD|High: $12,430 AUD|Avg: $7,467 AUD|-1.3%
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$6,066 AUD
Retailer 4$6,383 AUD
Retailer 9$6,391 AUD
Retailer 3$6,657 AUD
Retailer 8$6,789 AUD
Retailer 5$10,438 AUD
Queensmith$12,264 AUD

40 data points across 9 retailers

15 retailers$5,030 AUD to $10,438 AUD

A
Cheapest Retailer
-
$5,030 AUD
A
Retailer 2
-
$5,352 AUD
View
A
Retailer 3
-
$6,066 AUD
View
Final sale: no returns
A
Retailer 4
-
$6,383 AUD
View
A
Retailer 5
-
$6,391 AUD
View
Retailer 6
-
$6,573 AUD
View
Price last confirmed 22 days ago
Retailer 7
-
$6,573 AUD
View
Price last confirmed 22 days ago
Retailer 8
-
$6,573 AUD
View
Price last confirmed 20 days ago
A
Retailer 9
-
$6,602 AUD
View
A
Retailer 10
-
$6,657 AUD
View
A
Retailer 11
-
$6,789 AUD
View
Retailer 12
-
$7,584 AUD
View
Price last confirmed 19 days ago
B+
Retailer 13
-
$10,438 AUD
View
Retailer 14
-
$11,451 AUD
View
Price last confirmed 20 days ago
Most Expensive
Queensmith
2526686872 · Oct 28
$12,264 AUD
£6,635 GBP
View
Price last confirmed 9 days ago
14 more retailers have this diamond
Prices start from $5,030 AUDSave up to $5,408 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