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Round|Natural|IGI

1.25ct I IF Round Natural Diamond

EX • I/IF • IGI 651485123

Shape and cutting style on the report: Round brilliant

Certificate IGI 651485123

Diamond specifications and retailer prices

From $4,116 AUD
As of November 5, 2026
Save $3,548 AUD (46%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,121 AUD at NZ Jewellers · As of September 21, 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 I colour (near-colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI 651485123. Listed at 14 retailers as of November 4, 2026, with a 86% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.25
Carat
I
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.2°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 651485123
Dimensions6.92 × 6.88 × 4.30 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.92 mm6.88 mm1.25 ctI / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 651485123
Side View
Table 56.0%Crown 35.2°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 62.3%

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: $4,812 AUD|Low: $3,586 AUD|High: $7,888 AUD|Avg: $5,058 AUD|+0.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 6$4,116 AUD
Retailer 8$4,177 AUD
Retailer 2$4,197 AUD
Retailer 9$4,304 AUD
Retailer 10$4,662 AUD
Retailer 1$4,812 AUD
Retailer 4$5,276 AUD
Retailer 3$5,337 AUD
Retailer 5$5,608 AUD
Retailer 7$7,664 AUD

36 data points across 10 retailers

14 retailers$4,116 AUD to $7,664 AUD

A
Cheapest Retailer
-
$4,116 AUD
A
Retailer 2
-
$4,177 AUD
View
A
Retailer 3
-
$4,197 AUD
View
A
Retailer 4
-
$4,304 AUD
View
Final sale: no returns
Retailer 5
-
$4,493 AUD
View
Price last confirmed 102 days ago
Retailer 6
-
$4,662 AUD
View
Price last confirmed 44 days ago
Retailer 7
-
$4,662 AUD
View
Price last confirmed 36 days ago
A
Retailer 8
-
$4,812 AUD
View
A
Retailer 9
-
$5,276 AUD
View
A
Retailer 10
-
$5,337 AUD
View
Retailer 11
-
$5,378 AUD
View
Price last confirmed 45 days ago
A
Retailer 12
-
$5,608 AUD
View
A
Retailer 13
-
$7,664 AUD
View
Most Expensive
NZ Jewellers
5a395021-560a-4475-87ec-639475c164e0 · Sep 21
$8,121 AUD
$5,580 USD
View
Price last confirmed 46 days ago
13 more retailers have this diamond
Prices start from $4,116 AUDSave up to $3,548 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
$4,116 AUD