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Heart|Natural|GIA

1.51ct J SI2 Heart Natural Diamond

EX • J/SI2 • GIA 5556650693

Certificate GIA 5556650693

Diamond specifications and retailer prices

From $3,780 AUD
As of November 6, 2026
Save $683 AUD (15%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $4,463 AUD at Michael Trio · As of November 6, 2026
View at Michael Trio

About this 1.51ct natural heart diamond

This 1.51ct natural heart sits in the one-and-a-half to two carat band, graded J colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5556650693. Listed at 5 retailers as of November 6, 2026, with prices from $3,780 to $4,463, a $683 spread on the same certified stone. Michael Trio lists it at $4,463. 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
J
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5556650693
Dimensions6.76 × 8.04 × 4.61 mm
L/W Ratio1.19
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Cloud, Crystal, Needle, Indented Natural
Top View
6.76 mm8.04 mm1.51 ctJ / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5556650693
Side View
Table 60.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 57.4%

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: $4,463 AUD|Low: $3,371 AUD|High: $4,951 AUD|Avg: $4,123 AUD|-9.9%
Michael Trio
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 6, 2026
Retailer 2$3,780 AUD
Retailer 5$3,836 AUD
Retailer 4$3,880 AUD
Retailer 3$4,119 AUD
Michael Trio$4,463 AUD

45 data points across 5 retailers

5 retailers$3,780 AUD to $4,463 AUD

A
Cheapest Retailer
-
$3,780 AUD
A
Retailer 2
-
$3,836 AUD
View
A
Retailer 3
-
$3,880 AUD
View
Final sale: no returns
A
Retailer 4
-
$4,119 AUD
View
Most Expensive
A
Michael Trio
3574806415 · Nov 6
$4,463 AUD
SGD 4,144 SGD
View
4 more retailers have this diamond
Prices start from $3,780 AUDSave up to $683 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
$3,780 AUD