CaratHunter
Plans
Round|Natural|GIA

1.21ct I SI2 Round Natural Diamond

EX • I/SI2 • GIA 5242066312

Certificate GIA 5242066312

Diamond specifications and retailer prices

From $2,681 CAD
As of November 6, 2026
Save $3,679 CAD (58%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $6,360 CAD at MOH London · As of November 1, 2026
View at MOH London

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5242066312. Listed at 7 retailers as of November 1, 2026, with prices from $2,681 to $6,360, a $3,679 spread on the same certified stone. MOH London lists it at $6,360. 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
I
Color
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle41°
OriginNatural
Grading LabGIA
CertificateGIA 5242066312
Dimensions6.74 × 6.77 × 4.23 mm
L/W Ratio1.00
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
6.74 mm6.77 mm1.21 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5242066312
Side View
Table 59.0%CrownGirdle: Slightly ThickPavilion 41°Culet: NoneDepth 62.6%

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 6
Current: $6,360 CAD|Low: $2,681 CAD|High: $6,854 CAD|Avg: $4,305 CAD|-7.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6$2,681 CAD
Retailer 5$3,279 CAD
Retailer 2$3,426 CAD
Retailer 3$3,718 CAD
Retailer 4$4,409 CAD
Retailer 7$5,616 CAD
MOH London$6,360 CAD

36 data points across 7 retailers

7 retailers$2,681 CAD to $6,360 CAD

A
Cheapest Retailer
-
$2,681 CAD
A
Retailer 2
-
$3,279 CAD
View
A
Retailer 3
-
$3,426 CAD
View
A
Retailer 4
-
$3,718 CAD
View
B+
Retailer 5
-
$4,409 CAD
View
B+
Retailer 6
-
$5,616 CAD
View
Most Expensive
B
MOH London
8BB82B52B · Nov 1
$6,360 CAD
£3,586 GBP
View
6 more retailers have this diamond
Prices start from $2,681 CADSave up to $3,679 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
$2,681 CAD