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Heart|Natural|GIA

1.21ct I SI2 Heart Natural Diamond

ID • I/SI2 • GIA 64

Certificate GIA 64

Diamond specifications and retailer prices

From $3,903 USD
As of November 6, 2026
Save $1,021 USD (21%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $4,924 USD at Blue Nile · As of November 5, 2026
View at Blue Nile

About this 1.21ct natural heart diamond

This 1.21ct natural heart sits in the classic one-carat band, graded I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA. Listed at 3 retailers as of November 5, 2026, with prices from $3,903 to $4,924, a $1,021 spread on the same certified stone. Blue Nile lists it at $4,924. 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
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishVery Good
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 64
Dimensions6.48 × 7.52 × 4.38 mm
L/W Ratio1.16
Top View
6.48 mm7.52 mm1.21 ctI / SI2
OriginNatural
CutIdeal
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 64
Side View
Table 61.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 58.2%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Nov 6
Current: $4,924 USD|Low: $3,903 USD|High: $4,924 USD|Avg: $4,192 USD
Blue Nile
Retailer 2
Retailer 3
September 26, 2026
Retailer 2$3,903 USD
Retailer 3$4,116 USD
Blue Nile$4,924 USD

2 data points across 3 retailers

3 retailers$3,903 USD to $4,924 USD

B
Cheapest Retailer
-
$3,903 USD
B
Retailer 2
-
$4,116 USD
View
Most Expensive
B
Blue Nile
14940417 · Nov 5
$4,924 USD
View
2 more retailers have this diamond
Prices start from $3,903 USDSave up to $1,021 USD

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
$3,903 USD