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Heart|Natural|GIA

1.21ct F SI1 Heart Natural Diamond

EX • F/SI1 • GIA 1553316223

Certificate GIA 1553316223

Diamond specifications and retailer prices

From $2,190 USD
As of November 6, 2026
Save $421 USD (16%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $2,611 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 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 1553316223. Listed at 6 retailers as of November 5, 2026, with prices from $2,190 to $2,611, a $421 spread on the same certified stone. Blue Nile lists it at $2,611. 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
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1553316223
Dimensions6.68 × 7.29 × 4.34 mm
L/W Ratio1.09
Culet sizeNone
Key to symbols
Twinning Wisp, Feather, Indented Natural, Natural
Top View
6.68 mm7.29 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1553316223
Side View
Table 58.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 59.6%

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: $2,611 USD|Low: $2,097 USD|High: $3,179 USD|Avg: $2,489 USD|-17.9%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 6, 2026
Retailer 4$2,190 USD
Retailer 3$2,200 USD
Retailer 6$2,226 USD
Retailer 2$2,334 USD
Retailer 5$2,514 USD
Blue Nile$2,611 USD

42 data points across 6 retailers

6 retailers$2,190 USD to $2,611 USD

A
Cheapest Retailer
-
$2,190 USD
A
Retailer 2
-
$2,200 USD
View
Final sale: no returns
A
Retailer 3
-
$2,226 USD
View
A
Retailer 4
-
$2,334 USD
View
B+
Retailer 5
-
$2,514 USD
View
Most Expensive
B+
Blue Nile
29182291 · Nov 5
$2,611 USD
View
5 more retailers have this diamond
Prices start from $2,190 USDSave up to $421 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.

A
1.21ct Heart
$2,190 USD