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Round|Natural|IGI

1.21ct K I1 Round Natural Diamond

VG • K/I1 • IGI 539243378

Shape and cutting style on the report: Round brilliant

Certificate IGI 539243378

Diamond specifications and retailer prices

From $1,478 CAD
As of November 5, 2026
Save $668 CAD (31%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $3,762 CAD at NZ Jewellers · As of September 28, 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 I1 clarity (included), with a very-good cut grade and certified by IGI 539243378. Listed at 7 retailers as of November 5, 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. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
K
Color
I1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle36.6°
Pavilion angle41.1°
OriginNatural
Grading LabIGI
CertificateIGI 539243378
Dimensions6.82 × 6.93 × 4.11 mm
L/W Ratio1.02
Girdle conditionFaceted
Culet sizePointed
Cert comments
Faint Brown
Top View
6.82 mm6.93 mm1.21 ctK / I1
OriginNatural
CutVery Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI 539243378
Side View
Table 65.5%Crown 36.6°Girdle: MediumPavilion 41.1°Culet: NoneDepth 59.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: $2,145 CAD|Low: $1,003 CAD|High: $2,161 CAD|Avg: $1,600 CAD|+2.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 5, 2026
Retailer 6$1,003 CAD
Retailer 5$1,478 CAD
Retailer 3$1,542 CAD
Retailer 2$1,601 CAD
Retailer 4$1,835 CAD
Retailer 1$2,145 CAD

17 data points across 6 retailers

7 retailers$1,478 CAD to $2,145 CAD

B+
Cheapest Retailer
-
$1,478 CAD
Retailer 2
-
$1,542 CAD
View
Price last confirmed 29 days ago
B+
Retailer 3
-
$1,601 CAD
View
Retailer 4
-
$1,602 CAD
View
Price last confirmed 38 days ago
Retailer 5
-
$1,779 CAD
View
Price last confirmed 38 days ago
B+
Retailer 6
-
$2,145 CAD
View
Most Expensive
NZ Jewellers
65551074-f544-4321-bf60-99bc5aed9af7 · Sep 28
$3,762 CAD
$2,694 USD
View
Price last confirmed 39 days ago
6 more retailers have this diamond
Prices start from $1,478 CADSave up to $668 CAD

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.

B+
1.21ct Round
$1,478 CAD