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Heart|Natural|GIA

1.21ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 3145096740

Certificate GIA 3145096740

Diamond specifications and retailer prices

From $5,376 CAD
As of November 4, 2026
Save $5,208 CAD (49%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: $10,584 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 F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 3145096740. Listed at 5 retailers as of November 4, 2026, with prices from $5,376 to $10,584, a $5,208 spread on the same certified stone. MOH London lists it at $10,584. 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
F
Color
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryGood
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 3145096740
Dimensions6.67 × 7.24 × 4.15 mm
L/W Ratio1.09
Top View
6.67 mm7.24 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryGood
FluorescenceFaint
CertificateGIA 3145096740
Side View
Table 55.0%CrownGirdle: STK-ETKPavilionCulet: NoneDepth 57.3%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 4
Current: $10,584 CAD|Low: $6,456 CAD|High: $10,742 CAD|Avg: $7,850 CAD|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
November 6, 2026
Retailer 4$6,456 CAD
Retailer 3$6,625 CAD
Retailer 2$7,499 CAD
MOH London$10,584 CAD

40 data points across 4 retailers

5 retailers$5,376 CAD to $10,584 CAD

B
Cheapest Retailer
-
$5,376 CAD
B
Retailer 2
-
$6,456 CAD
View
B
Retailer 3
-
$6,625 CAD
View
B
Retailer 4
-
$7,499 CAD
View
Most Expensive
B
MOH London
FF985070C · Nov 4
$10,584 CAD
£5,925 GBP
View
4 more retailers have this diamond
Prices start from $5,376 CADSave up to $5,208 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
$5,376 CAD