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1.21ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 5503489142

Certificate GIA 5503489142

Diamond specifications and retailer prices

From €2,888 EUR
As of November 1, 2026
Save €4,068 EUR (58%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €6,956 EUR at Diamond Quarter · As of November 5, 2026
View at Diamond Quarter

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded F colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 5503489142. Listed at 16 retailers as of November 1, 2026, with prices from €2,888 to €6,956, a €4,068 spread on the same certified stone. Diamond Quarter lists it at €6,956. 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
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 5503489142
Dimensions6.81 × 6.78 × 4.22 mm
L/W Ratio1.00
Star length50%
Lower girdle75%
Top View
6.81 mm6.78 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5503489142
Side View
Table 56.0%Crown 35.5°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 62.1%

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 1
Current: €3,649 EUR|Low: €2,502 EUR|High: €6,254 EUR|Avg: €4,076 EUR|+2.5%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 3, 2026
Retailer 6€2,929 EUR
Retailer 7€3,002 EUR
Retailer 5€3,012 EUR
Retailer 1€3,649 EUR
Retailer 2€3,798 EUR
Retailer 3€3,944 EUR
Retailer 9€4,063 EUR
Retailer 10€4,271 EUR
Retailer 4€6,004 EUR
Retailer 8€6,254 EUR

33 data points across 10 retailers

16 retailers€2,888 EUR to €6,956 EUR

A
Cheapest Retailer
-
€2,888 EUR
A
Retailer 2
-
€2,929 EUR
View
B+
Retailer 3
-
€3,012 EUR
View
Retailer 4
-
€3,252 EUR
View
Price last confirmed 22 days ago
Retailer 5
-
€3,252 EUR
View
Price last confirmed 18 days ago
Retailer 6
-
€3,378 EUR
View
Price last confirmed 23 days ago
B+
Retailer 7
-
€3,649 EUR
View
B+
Retailer 8
-
€3,681 EUR
View
B+
Retailer 9
-
€3,681 EUR
View
Retailer 10
-
€3,753 EUR
View
Price last confirmed 20 days ago
B+
Retailer 11
-
€3,798 EUR
View
B+
Retailer 12
-
€3,944 EUR
View
Retailer 13
-
€4,063 EUR
View
Price last confirmed 23 days ago
B
Retailer 14
-
€6,004 EUR
View
Retailer 15
-
€6,254 EUR
View
Price last confirmed 18 days ago
Most Expensive
B
Diamond Quarter
1.21SI2F55428241N · Nov 5
€6,956 EUR
£6,115 GBP
View
15 more retailers have this diamond
Prices start from €2,888 EURSave up to €4,068 EUR

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 Round
€2,888 EUR