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Round|Natural|GIA

1.51ct K I2 Round Natural Diamond

EX • K/I2 • GIA 1459159415

Certificate GIA 1459159415

Diamond specifications and retailer prices

From $2,428 AUD
As of November 5, 2026
Save $4,018 AUD (62%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $6,447 AUD at NZ Jewellers · As of November 2, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded K colour (faint-tinted) and I2 clarity (included), with a top-tier cut grade and certified by GIA 1459159415. Listed at 8 retailers as of November 2, 2026, with prices from $2,428 to $6,447, a $4,018 spread on the same certified stone. NZ Jewellers lists it at $6,447. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.51
Carat
K
Colour
I2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1459159415
Dimensions7.31 × 7.26 × 4.56 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Indented Natural, Needle, Natural
Top View
7.31 mm7.26 mm1.51 ctK / I2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1459159415
Side View
Table 57.0%Crown 35.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.6%

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 5
Current: $6,447 AUD|Low: $2,428 AUD|High: $6,447 AUD|Avg: $3,354 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 5, 2026
Retailer 7$2,428 AUD
Retailer 4$2,643 AUD
Retailer 6$2,666 AUD
Retailer 3$2,766 AUD
Retailer 5$3,050 AUD
Retailer 2$3,613 AUD
NZ Jewellers$6,447 AUD

22 data points across 7 retailers

8 retailers$2,428 AUD to $6,447 AUD

A
Cheapest Retailer
-
$2,428 AUD
A
Retailer 2
-
$2,643 AUD
View
Retailer 3
-
$2,666 AUD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$2,766 AUD
View
B+
Retailer 5
-
$2,788 AUD
View
B+
Retailer 6
-
$3,050 AUD
View
B+
Retailer 7
-
$3,613 AUD
View
Most Expensive
B
NZ Jewellers
8dacc919-c4f6-44da-8819-8264e09ba70f · Nov 2
$6,447 AUD
$4,513 USD
View
7 more retailers have this diamond
Prices start from $2,428 AUDSave up to $4,018 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 Round
$2,428 AUD