CaratHunter
Plans
Round|Natural|GIA

1.25ct K I1 Round Natural Diamond

EX • K/I1 • GIA 1555077138

Certificate GIA 1555077138

Diamond specifications and retailer prices

From $2,257 AUD
As of November 4, 2026
Save $3,784 AUD (63%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $6,041 AUD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.25ct natural round diamond

This 1.25ct natural round sits in the one-and-a-quarter to one-and-a-half carat band, graded K colour (faint-tinted) and I1 clarity (included), with a top-tier cut grade and certified by GIA 1555077138. Listed at 7 retailers as of November 4, 2026, with prices from $2,257 to $6,041, a $3,784 spread on the same certified stone. NZ Jewellers lists it at $6,041. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.25
Carat
K
Colour
I1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1555077138
Dimensions6.81 × 6.87 × 4.28 mm
L/W Ratio1.01
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Cavity, Needle, Indented Natural
Top View
6.81 mm6.87 mm1.25 ctK / I1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555077138
Side View
Table 58.0%Crown 36°GirdlePavilion 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 4
Current: $6,041 AUD|Low: $2,257 AUD|High: $6,543 AUD|Avg: $3,338 AUD|-6.8%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 5, 2026
Retailer 6$2,257 AUD
Retailer 3$2,477 AUD
Retailer 5$2,477 AUD
Retailer 4$2,591 AUD
Retailer 7$2,858 AUD
Retailer 8$3,251 AUD
Retailer 2$3,363 AUD
NZ Jewellers$6,041 AUD

35 data points across 8 retailers

7 retailers$2,257 AUD to $6,041 AUD

A
Cheapest Retailer
-
$2,257 AUD
A
Retailer 2
-
$2,477 AUD
View
Retailer 3
-
$2,477 AUD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$2,591 AUD
View
B+
Retailer 5
-
$2,858 AUD
View
B+
Retailer 6
-
$3,363 AUD
View
Most Expensive
B
NZ Jewellers
9108a912-095e-4554-9121-00f206802627 · Nov 5
$6,041 AUD
$4,229 USD
View
6 more retailers have this diamond
Prices start from $2,257 AUDSave up to $3,784 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
1.25ct Round
$2,257 AUD