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Round|Natural|GIA

1.50ct K I1 Round Natural Diamond

EX • K/I1 • GIA 6422643720

Certificate GIA 6422643720

Diamond specifications and retailer prices

From $2,466 AUD
As of November 5, 2026
Save $4,297 AUD (64%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $6,763 AUD at NZ Jewellers · As of November 5, 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 6422643720. Listed at 7 retailers as of November 5, 2026, with prices from $2,466 to $6,763, a $4,297 spread on the same certified stone. NZ Jewellers lists it at $6,763. 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
SymmetryVery Good
FluorescenceNone
Crown angle35°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 6422643720
Dimensions7.28 × 7.31 × 4.56 mm
L/W Ratio1.00
Top View
7.28 mm7.31 mm1.50 ctK / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6422643720
Side View
Table 56.0%Crown 35°Girdle: THN-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 5
Current: $6,763 AUD|Low: $2,466 AUD|High: $6,763 AUD|Avg: $3,529 AUD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 2$2,466 AUD
Retailer 6$2,921 AUD
Retailer 4$3,234 AUD
Retailer 5$3,234 AUD
Retailer 8$3,237 AUD
Retailer 3$3,384 AUD
Retailer 7$3,733 AUD
NZ Jewellers$6,763 AUD

41 data points across 8 retailers

7 retailers$2,466 AUD to $6,763 AUD

A
Cheapest Retailer
-
$2,466 AUD
B+
Retailer 2
-
$2,921 AUD
View
Retailer 3
-
$3,234 AUD
View
Price last confirmed 8 days ago
B+
Retailer 4
-
$3,234 AUD
View
B+
Retailer 5
-
$3,384 AUD
View
B+
Retailer 6
-
$3,733 AUD
View
Most Expensive
B
NZ Jewellers
884c886c-b087-48e7-9b7a-18db6065c35b · Nov 5
$6,763 AUD
$4,734 USD
View
6 more retailers have this diamond
Prices start from $2,466 AUDSave up to $4,297 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
$2,466 AUD