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Heart|Natural|GIA

1.21ct D SI1 Heart Natural Diamond

GD • D/SI1 • GIA 2203906541

Certificate GIA 2203906541

Diamond specifications and retailer prices

From $5,041 CAD
As of November 6, 2026
Save $5,361 CAD (52%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $10,402 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 D colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 2203906541. Listed at 19 retailers as of November 4, 2026, with prices from $5,041 to $10,402, a $5,361 spread on the same certified stone. MOH London lists it at $10,402. 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
D
Color
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2203906541
Dimensions6.42 × 5.69 × 3.79 mm
L/W Ratio1.13
Culet sizeNone
Key to symbols
Crystal, Feather, Needle
Top View
6.42 mm5.69 mm1.21 ctD / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2203906541
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 66.6%

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 6
Current: $10,402 CAD|Low: $4,306 CAD|High: $10,556 CAD|Avg: $6,566 CAD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 10$5,041 CAD
Retailer 6$5,166 CAD
Retailer 5$5,220 CAD
Retailer 7$5,476 CAD
Retailer 9$5,933 CAD
Retailer 3$6,408 CAD
Retailer 8$6,601 CAD
Retailer 2$6,965 CAD
Retailer 4$7,989 CAD
MOH London$10,402 CAD

46 data points across 10 retailers

19 retailers$5,041 CAD to $10,402 CAD

B+
Cheapest Retailer
-
$5,041 CAD
B+
Retailer 2
-
$5,116 CAD
View
B+
Retailer 3
-
$5,166 CAD
View
B
Retailer 4
-
$5,220 CAD
View
B
Retailer 5
-
$5,231 CAD
View
B
Retailer 6
-
$5,476 CAD
View
Final sale: no returns
B
Retailer 7
-
$5,640 CAD
View
B
Retailer 8
-
$5,906 CAD
View
Retailer 9
-
$5,933 CAD
View
Price last confirmed 8 days ago
B
Retailer 10
-
$6,029 CAD
View
Retailer 11
-
$6,055 CAD
View
Price last confirmed 14 days ago
B
Retailer 12
-
$6,300 CAD
View
B
Retailer 13
-
$6,408 CAD
View
Retailer 14
-
$6,601 CAD
View
Price last confirmed 28 days ago
B
Retailer 15
-
$6,830 CAD
View
B
Retailer 16
-
$6,965 CAD
View
B
Retailer 17
-
$7,989 CAD
View
C
Retailer 18
-
$9,472 CAD
View
Most Expensive
B
MOH London
134D3AFB4 · Nov 4
$10,402 CAD
£5,823 GBP
View
18 more retailers have this diamond
Prices start from $5,041 CADSave up to $5,361 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 Heart
$5,041 CAD