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Round|Natural|GIA

1.50ct K I1 Round Natural Diamond

EX • K/I1 • GIA 2558416995

Certificate GIA 2558416995

Diamond specifications and retailer prices

From $3,273 AUD
As of November 6, 2026
Save $3,357 AUD (51%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,811 AUD at NZ Jewellers · As of October 17, 2026
View at NZ Jewellers

About this 1.5ct natural round diamond

This 1.5ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and I1 clarity (included), with a top-tier cut grade and certified by GIA 2558416995. Listed at 14 retailers as of November 4, 2026, with a 103% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.50
Carat
K
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 2558416995
Dimensions7.28 × 7.32 × 4.53 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
7.28 mm7.32 mm1.50 ctK / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2558416995
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.5%

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: $7,962 AUD|Low: $3,163 AUD|High: $7,962 AUD|Avg: $4,850 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 5, 2026
Retailer 8$3,273 AUD
Retailer 5$3,453 AUD
Retailer 6$3,564 AUD
Retailer 12$3,638 AUD
Retailer 10$3,793 AUD
Retailer 4$3,986 AUD
Retailer 9$4,033 AUD
Retailer 3$4,598 AUD
Retailer 2$4,951 AUD
Retailer 11$5,805 AUD
Retailer 7$6,630 AUD
NZ Jewellers$7,962 AUD

27 data points across 12 retailers

14 retailers$3,273 AUD to $6,630 AUD

A
Cheapest Retailer
-
$3,273 AUD
A
Retailer 2
-
$3,453 AUD
View
A
Retailer 3
-
$3,564 AUD
View
Final sale: no returns
A
Retailer 4
-
$3,793 AUD
View
Retailer 5
-
$3,986 AUD
View
Price last confirmed 21 days ago
Retailer 6
-
$3,986 AUD
View
Price last confirmed 29 days ago
A
Retailer 7
-
$4,033 AUD
View
Retailer 8
-
$4,138 AUD
View
Price last confirmed 22 days ago
Retailer 9
-
$4,598 AUD
View
Price last confirmed 28 days ago
B+
Retailer 10
-
$4,951 AUD
View
B
Retailer 11
-
$6,630 AUD
View
Retailer 12
-
$7,962 AUD
View
Price last confirmed 42 days ago
Retailer 13
-
$8,332 AUD
View
Price last confirmed 39 days ago
Most Expensive
NZ Jewellers
c7a6efa9-6a5a-437c-9a7d-adf5314be66a · Oct 17
$8,811 AUD
$6,168 USD
View
Price last confirmed 19 days ago
13 more retailers have this diamond
Prices start from $3,273 AUDSave up to $3,357 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
1.50ct Round
$3,273 AUD