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Round|Natural|IGI

1.21ct K IF Round Natural Diamond

EX • K/IF • IGI 813663903

Shape and cutting style on the report: Round brilliant

Certificate IGI 813663903

Diamond specifications and retailer prices

From $2,489 AUD
As of November 1, 2026
Save $1,132 AUD (31%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,989 AUD at NZ Jewellers · As of September 24, 2026
View at NZ Jewellers

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI 813663903. Listed at 14 retailers as of November 1, 2026, with a 45% 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

1.21
Carat
K
Colour
IF
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle35.5°
Pavilion angle40.9°
OriginNatural
Grading LabIGI
CertificateIGI 813663903
Dimensions6.80 × 6.83 × 4.22 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.80 mm6.83 mm1.21 ctK / IF
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 813663903
Side View
Table 57.0%Crown 35.5°Girdle: THN-MEDPavilion 40.9°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 1
Current: $3,340 AUD|Low: $2,489 AUD|High: $5,081 AUD|Avg: $3,398 AUD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 4, 2026
Retailer 6$2,540 AUD
Retailer 4$2,583 AUD
Retailer 9$2,883 AUD
Retailer 5$3,253 AUD
Retailer 1$3,340 AUD
Retailer 2$3,580 AUD
Retailer 3$3,621 AUD
Retailer 7$4,082 AUD
Retailer 8$5,046 AUD

36 data points across 9 retailers

14 retailers$2,489 AUD to $3,621 AUD

A
Cheapest Retailer
-
$2,489 AUD
Retailer 2
-
$2,540 AUD
View
Price last confirmed 7 days ago
A
Retailer 3
-
$2,583 AUD
View
Retailer 4
-
$2,866 AUD
View
Price last confirmed 45 days ago
Retailer 5
-
$2,866 AUD
View
Price last confirmed 37 days ago
A
Retailer 6
-
$2,883 AUD
View
A
Retailer 7
-
$3,253 AUD
View
Price last confirmed 7 days ago
A
Retailer 8
-
$3,311 AUD
View
A
Retailer 9
-
$3,340 AUD
View
A
Retailer 10
-
$3,580 AUD
View
A
Retailer 11
-
$3,621 AUD
View
Retailer 12
-
$4,082 AUD
View
Price last confirmed 12 days ago
Retailer 13
-
$5,046 AUD
View
Price last confirmed 17 days ago
Most Expensive
NZ Jewellers
d551b695-9eec-495c-9d0f-dda8f08e3623 · Sep 24
$6,989 AUD
$4,802 USD
View
Price last confirmed 43 days ago
13 more retailers have this diamond
Prices start from $2,489 AUDSave up to $1,132 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
1.21ct Round
$2,489 AUD