CaratHunter
Plans
Heart|Natural|GIA

1.28ct F SI2 Heart Natural Diamond

EX • F/SI2 • GIA 7556167524

Certificate GIA 7556167524

Diamond specifications and retailer prices

From $3,735 AUD
As of November 6, 2026
Save $564 AUD (13%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $4,298 AUD at Michael Trio · As of November 6, 2026
View at Michael Trio

About this 1.28ct natural heart diamond

This 1.28ct natural heart sits in the one-and-a-quarter to one-and-a-half 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 7556167524. Listed at 3 retailers as of November 6, 2026, with prices from $3,735 to $4,298, a $564 spread on the same certified stone. Michael Trio lists it at $4,298. 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

1.28
Carat
F
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 7556167524
Dimensions6.53 × 7.67 × 4.56 mm
L/W Ratio1.17
Culet sizeNone
Key to symbols
Cloud, Feather, Crystal, Needle, Indented Natural
Top View
6.53 mm7.67 mm1.28 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 7556167524
Side View
Table 54.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 59.4%

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: $4,298 AUD|Low: $3,735 AUD|High: $5,251 AUD|Avg: $4,422 AUD|-10.5%
Michael Trio
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 3$3,735 AUD
Retailer 2$4,010 AUD
Michael Trio$4,298 AUD
Retailer 4$5,053 AUD

41 data points across 4 retailers

3 retailers$3,735 AUD to $4,298 AUD

A
Cheapest Retailer
-
$3,735 AUD
A
Retailer 2
-
$4,010 AUD
View
Most Expensive
A
Michael Trio
1765959506 · Nov 6
$4,298 AUD
SGD 3,991 SGD
View
2 more retailers have this diamond
Prices start from $3,735 AUDSave up to $564 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
1.28ct Heart
$3,735 AUD