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Round|Natural|GIA

1.25ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 2557996049

Certificate GIA 2557996049

Diamond specifications and retailer prices

From $4,256 AUD
As of November 5, 2026
Save $4,095 AUD (49%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $8,351 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 F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2557996049. Listed at 12 retailers as of November 5, 2026, with prices from $4,256 to $8,351, a $4,095 spread on the same certified stone. NZ Jewellers lists it at $8,351. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.25
Carat
F
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 2557996049
Dimensions6.85 × 6.87 × 4.29 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Twinning Wisp, Feather
Top View
6.85 mm6.87 mm1.25 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2557996049
Side View
Table 58.0%Crown 35.5°GirdlePavilion 41°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: $8,351 AUD|Low: $4,256 AUD|High: $8,581 AUD|Avg: $5,429 AUD|-1.8%
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 6, 2026
Retailer 7$4,256 AUD
Retailer 2$4,333 AUD
Retailer 3$4,424 AUD
Retailer 10$4,793 AUD
Retailer 12$4,793 AUD
Retailer 6$4,932 AUD
Retailer 11$4,977 AUD
Retailer 9$5,002 AUD
Retailer 4$5,531 AUD
Retailer 5$5,568 AUD
Retailer 8$8,015 AUD
NZ Jewellers$8,351 AUD

26 data points across 12 retailers

12 retailers$4,256 AUD to $8,351 AUD

A
Cheapest Retailer
-
$4,256 AUD
A
Retailer 2
-
$4,333 AUD
View
A
Retailer 3
-
$4,424 AUD
View
Final sale: no returns
Retailer 4
-
$4,793 AUD
View
Price last confirmed 9 days ago
A
Retailer 5
-
$4,793 AUD
View
A
Retailer 6
-
$4,932 AUD
View
A
Retailer 7
-
$4,977 AUD
View
A
Retailer 8
-
$5,002 AUD
View
A
Retailer 9
-
$5,531 AUD
View
A
Retailer 10
-
$5,568 AUD
View
B
Retailer 11
-
$8,015 AUD
View
Most Expensive
B+
NZ Jewellers
d46dfae0-3da0-490c-967b-76fb01cffe9e · Nov 5
$8,351 AUD
$5,738 USD
View
11 more retailers have this diamond
Prices start from $4,256 AUDSave up to $4,095 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
$4,256 AUD