Round|Natural|IGI

1.21ct K VS1 Round Natural Diamond

EX • K/VS1 • IGI 816643819

Shape and cutting style on the report: Round brilliant

Certificate IGI 816643819

Diamond specifications and retailer prices

From $1,721 USD
As of November 5, 2026
Save $2,675 USD (61%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $4,396 USD at NZ Jewellers · As of November 2, 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 VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI 816643819. Listed at 11 retailers as of November 2, 2026, with prices from $1,721 to $4,396, a $2,675 spread on the same certified stone. NZ Jewellers lists it at $4,396. 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
VS1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabIGI
CertificateIGI 816643819
Dimensions6.76 × 6.81 × 4.24 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
IDEAL CUT ROUND BRILLIANT
Top View
6.76 mm6.81 mm1.21 ctK / VS1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 816643819
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°CuletDepth 62.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $1,956 USD|Low: $1,721 USD|High: $3,728 USD|Avg: $2,489 USD|-1.9%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 3$1,721 USD
Retailer 1$1,956 USD
Retailer 7$2,200 USD
Retailer 6$2,430 USD
Retailer 4$2,566 USD
Retailer 2$2,678 USD
Retailer 5$3,674 USD

41 data points across 7 retailers

11 retailers$1,721 USD to $4,396 USD

A
Cheapest Retailer
-
$1,721 USD
A
Retailer 2
-
$1,956 USD
View
A
Retailer 3
-
$2,103 USD
View
A
Retailer 4
-
$2,200 USD
View
B+
Retailer 5
-
$2,241 USD
View
B+
Retailer 6
-
$2,426 USD
View
B+
Retailer 7
-
$2,430 USD
View
B+
Retailer 8
-
$2,566 USD
View
B+
Retailer 9
-
$2,678 USD
View
B
Retailer 10
-
$3,674 USD
View
Most Expensive
B
NZ Jewellers
3c70d52b-20c1-4940-87e6-d516f0da60f4 · Nov 2
$4,396 USD
View
10 more retailers have this diamond
Prices start from $1,721 USDSave up to $2,675 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
$1,721 USD