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 $1,710 USD
As of November 1, 2026
Save $778 USD (31%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $4,802 USD 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
Color
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

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 1
Current: $2,295 USD|Low: $1,710 USD|High: $3,491 USD|Avg: $2,334 USD
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 4, 2026
Retailer 6$1,745 USD
Retailer 4$1,775 USD
Retailer 9$1,981 USD
Retailer 5$2,235 USD
Retailer 1$2,295 USD
Retailer 2$2,460 USD
Retailer 3$2,488 USD
Retailer 7$2,805 USD
Retailer 8$3,467 USD

37 data points across 9 retailers

14 retailers$1,710 USD to $2,488 USD

A
Cheapest Retailer
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$1,710 USD
A
Retailer 2
-
$1,745 USD
View
A
Retailer 3
-
$1,775 USD
View
Retailer 4
-
$1,969 USD
View
Price last confirmed 44 days ago
Retailer 5
-
$1,969 USD
View
Price last confirmed 36 days ago
A
Retailer 6
-
$1,981 USD
View
A
Retailer 7
-
$2,235 USD
View
A
Retailer 8
-
$2,275 USD
View
A
Retailer 9
-
$2,295 USD
View
A
Retailer 10
-
$2,460 USD
View
A
Retailer 11
-
$2,488 USD
View
Retailer 12
-
$2,805 USD
View
Price last confirmed 11 days ago
Retailer 13
-
$3,467 USD
View
Price last confirmed 16 days ago
Most Expensive
NZ Jewellers
d551b695-9eec-495c-9d0f-dda8f08e3623 · Sep 24
$4,802 USD
View
Price last confirmed 42 days ago
13 more retailers have this diamond
Prices start from $1,710 USDSave up to $778 USD

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
$1,710 USD