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Round|Natural|GIA

1.21ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 5423150018

Certificate GIA 5423150018

Diamond specifications and retailer prices

From $2,839 CAD
As of November 6, 2026
Save $4,542 CAD (62%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: $7,381 CAD at NZ Jewellers · As of November 5, 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 SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5423150018. Listed at 9 retailers as of November 5, 2026, with prices from $2,839 to $7,381, a $4,542 spread on the same certified stone. NZ Jewellers lists it at $7,381. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.21
Carat
K
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5423150018
Dimensions6.83 × 6.79 × 4.26 mm
L/W Ratio1.01
Top View
6.83 mm6.79 mm1.21 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5423150018
Side View
Table 55.0%Crown 35.5°GirdlePavilion 41°Culet: NoneDepth 62.6%

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 6
Current: $7,381 CAD|Low: $2,839 CAD|High: $7,381 CAD|Avg: $4,748 CAD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 5$2,839 CAD
Retailer 6$3,346 CAD
Retailer 2$3,750 CAD
Retailer 3$4,392 CAD
Retailer 4$6,218 CAD
NZ Jewellers$7,381 CAD

42 data points across 6 retailers

9 retailers$2,839 CAD to $7,381 CAD

A
Cheapest Retailer
-
$2,839 CAD
B+
Retailer 2
-
$3,198 CAD
View
B+
Retailer 3
-
$3,346 CAD
View
B
Retailer 4
-
$3,691 CAD
View
B+
Retailer 5
-
$3,750 CAD
View
B
Retailer 6
-
$4,392 CAD
View
B
Retailer 7
-
$5,131 CAD
View
Retailer 8
-
$6,218 CAD
View
Price last confirmed 8 days ago
Most Expensive
C
NZ Jewellers
6d102739-0765-4f66-bfa8-7da1dfd07ccb · Nov 5
$7,381 CAD
$5,285 USD
View
8 more retailers have this diamond
Prices start from $2,839 CADSave up to $4,542 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.

A
1.21ct Round
$2,839 CAD