CaratHunter
Plans
Round|Natural|GIA

1.51ct K I1 Round Natural Diamond

EX • K/I1 • GIA 6422460858

Certificate GIA 6422460858

Diamond specifications and retailer prices

From $4,187 AUD
As of November 6, 2026
Save $5,598 AUD (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $9,785 AUD at NZ Jewellers · As of November 5, 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 I1 clarity (included), with a top-tier cut grade and certified by GIA 6422460858. Listed at 8 retailers as of November 5, 2026, with prices from $4,187 to $9,785, a $5,598 spread on the same certified stone. NZ Jewellers lists it at $9,785. 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
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6422460858
Dimensions7.33 × 7.30 × 4.57 mm
L/W Ratio1.00
Top View
7.33 mm7.30 mm1.51 ctK / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6422460858
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.8°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: $9,785 AUD|Low: $4,150 AUD|High: $9,785 AUD|Avg: $5,781 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
Retailer 13
November 5, 2026
Retailer 7$4,187 AUD
Retailer 6$4,378 AUD
Retailer 3$4,517 AUD
Retailer 12$4,570 AUD
Retailer 9$5,088 AUD
Retailer 11$5,088 AUD
Retailer 8$5,284 AUD
Retailer 5$5,364 AUD
Retailer 10$5,871 AUD
Retailer 2$6,307 AUD
Retailer 13$6,683 AUD
Retailer 4$7,942 AUD
NZ Jewellers$9,785 AUD

24 data points across 13 retailers

8 retailers$4,187 AUD to $9,785 AUD

B+
Cheapest Retailer
-
$4,187 AUD
A
Retailer 2
-
$4,378 AUD
View
Retailer 3
-
$5,088 AUD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$5,088 AUD
View
B+
Retailer 5
-
$5,284 AUD
View
B
Retailer 6
-
$5,871 AUD
View
B
Retailer 7
-
$6,307 AUD
View
Most Expensive
C
NZ Jewellers
56c14851-5019-4e7f-a5c6-c9a71134b5aa · Nov 5
$9,785 AUD
$6,850 USD
View
7 more retailers have this diamond
Prices start from $4,187 AUDSave up to $5,598 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
$4,187 AUD