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Round|Natural|IGI

1.25ct I IF Round Natural Diamond

EX • I/IF • IGI 821618736

Shape and cutting style on the report: Round brilliant

Certificate IGI 821618736

Diamond specifications and retailer prices

From $4,242 AUD
As of November 4, 2026
Save $4,030 AUD (49%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,930 AUD at NZ Jewellers · As of October 17, 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 821618736. Listed at 14 retailers as of November 4, 2026, with a 95% 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
FluorescenceFaint
Crown angle36.4°
Pavilion angle41°
OriginNatural
Grading LabIGI
CertificateIGI 821618736
Dimensions6.86 × 6.90 × 4.26 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.86 mm6.90 mm1.25 ctI / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 821618736
Side View
Table 59.0%Crown 36.4°Girdle: MED-STKPavilion 41°Culet: NoneDepth 61.9%

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: $7,280 AUD|Low: $4,154 AUD|High: $8,619 AUD|Avg: $5,552 AUD|+1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 9$4,242 AUD
Retailer 7$4,286 AUD
Retailer 2$4,698 AUD
Retailer 10$4,701 AUD
Retailer 3$4,769 AUD
Retailer 6$5,395 AUD
Retailer 4$5,397 AUD
Retailer 5$6,054 AUD
Retailer 1$7,280 AUD
Retailer 8$8,272 AUD

26 data points across 10 retailers

14 retailers$4,242 AUD to $8,272 AUD

A
Cheapest Retailer
-
$4,242 AUD
A
Retailer 2
-
$4,286 AUD
View
A
Retailer 3
-
$4,698 AUD
View
A
Retailer 4
-
$4,701 AUD
View
A
Retailer 5
-
$4,769 AUD
View
Retailer 6
-
$4,819 AUD
View
Price last confirmed 21 days ago
Retailer 7
-
$5,012 AUD
View
Price last confirmed 22 days ago
Retailer 8
-
$5,126 AUD
View
Price last confirmed 19 days ago
A
Retailer 9
-
$5,395 AUD
View
A
Retailer 10
-
$5,397 AUD
View
A
Retailer 11
-
$6,054 AUD
View
A
Retailer 12
-
$7,280 AUD
View
B+
Retailer 13
-
$8,272 AUD
View
Most Expensive
NZ Jewellers
e01ccdae-a9a8-4251-9c4a-c65804b2ef46 · Oct 17
$8,930 AUD
$6,136 USD
View
Price last confirmed 20 days ago
13 more retailers have this diamond
Prices start from $4,242 AUDSave up to $4,030 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
$4,242 AUD