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Heart|Natural|GIA

1.55ct K SI2 Heart Natural Diamond

EX • K/SI2 • GIA 2547774524

Certificate GIA 2547774524

Diamond specifications and retailer prices

From $3,762 AUD
As of November 6, 2026
Save $4,510 AUD (55%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $8,935 AUD at NZ Jewellers · As of September 20, 2026
View at NZ Jewellers

About this 1.55ct natural heart diamond

This 1.55ct natural heart sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2547774524. Listed at 15 retailers as of November 2, 2026, with a 120% 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

1.55
Carat
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2547774524
Dimensions7.30 × 7.94 × 4.64 mm
L/W Ratio1.09
Top View
7.30 mm7.94 mm1.55 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2547774524
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 58.4%

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: $3,981 AUD|Low: $3,762 AUD|High: $8,452 AUD|Avg: $5,179 AUD|-3.1%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9$3,762 AUD
Retailer 1$3,981 AUD
Retailer 6$4,448 AUD
Retailer 2$4,547 AUD
Retailer 5$5,119 AUD
Retailer 10$5,156 AUD
Retailer 4$5,239 AUD
Retailer 8$5,269 AUD
Retailer 3$5,759 AUD
Retailer 7$8,272 AUD

37 data points across 10 retailers

15 retailers$3,762 AUD to $8,272 AUD

A
Cheapest Retailer
-
$3,762 AUD
A
Retailer 2
-
$3,981 AUD
View
A
Retailer 3
-
$4,448 AUD
View
A
Retailer 4
-
$4,547 AUD
View
B+
Retailer 5
-
$4,682 AUD
View
B+
Retailer 6
-
$5,119 AUD
View
Retailer 7
-
$5,129 AUD
View
Price last confirmed 45 days ago
B+
Retailer 8
-
$5,156 AUD
View
B+
Retailer 9
-
$5,239 AUD
View
B+
Retailer 10
-
$5,269 AUD
View
B+
Retailer 11
-
$5,408 AUD
View
B+
Retailer 12
-
$5,759 AUD
View
Retailer 13
-
$5,918 AUD
View
Price last confirmed 45 days ago
B
Retailer 14
-
$8,272 AUD
View
Most Expensive
NZ Jewellers
3d7b3836-d02d-4496-9312-fd5fa0cb1fe3 · Sep 20
$8,935 AUD
$6,139 USD
View
Price last confirmed 46 days ago
14 more retailers have this diamond
Prices start from $3,762 AUDSave up to $4,510 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
1.55ct Heart
$3,762 AUD