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Heart|Natural|GIA

1.21ct K SI2 Heart Natural Diamond

EX • K/SI2 • GIA 2434019421

Certificate GIA 2434019421

Diamond specifications and retailer prices

From $2,251 CAD
As of November 4, 2026
Save $3,062 CAD (58%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $5,313 CAD at MOH London · As of November 4, 2026
View at MOH London

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2434019421. Listed at 12 retailers as of November 4, 2026, with prices from $2,251 to $5,313, a $3,062 spread on the same certified stone. MOH London lists it at $5,313. 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 (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 2434019421
Dimensions6.20 × 5.86 × 4.10 mm
L/W Ratio1.06
Top View
6.20 mm5.86 mm1.21 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2434019421
Side View
Table 61.0%CrownGirdle: ThickPavilionCulet: NoneDepth 69.9%

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 4
Current: $5,313 CAD|Low: $2,232 CAD|High: $5,382 CAD|Avg: $3,227 CAD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 6, 2026
Retailer 8$2,251 CAD
Retailer 10$2,689 CAD
Retailer 13$2,746 CAD
Retailer 5$2,851 CAD
Retailer 11$2,902 CAD
Retailer 9$3,040 CAD
Retailer 2$3,109 CAD
Retailer 3$3,193 CAD
Retailer 12$3,235 CAD
Retailer 7$3,303 CAD
Retailer 4$3,663 CAD
Retailer 6$3,774 CAD
MOH London$5,313 CAD

31 data points across 13 retailers

12 retailers$2,251 CAD to $5,313 CAD

A
Cheapest Retailer
-
$2,251 CAD
B+
Retailer 2
-
$2,689 CAD
View
B+
Retailer 3
-
$2,746 CAD
View
B+
Retailer 4
-
$2,902 CAD
View
Retailer 5
-
$3,040 CAD
View
Price last confirmed 8 days ago
B+
Retailer 6
-
$3,109 CAD
View
B+
Retailer 7
-
$3,138 CAD
View
B
Retailer 8
-
$3,193 CAD
View
B
Retailer 9
-
$3,235 CAD
View
B
Retailer 10
-
$3,303 CAD
View
B
Retailer 11
-
$3,774 CAD
View
Most Expensive
B
MOH London
AEE3F3158 · Nov 4
$5,313 CAD
£2,974 GBP
View
11 more retailers have this diamond
Prices start from $2,251 CADSave up to $3,062 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 Heart
$2,251 CAD