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Round|Natural|GIA

1.21ct F SI2 Round Natural Diamond

EX • F/SI2 • GIA 5136012626

Certificate GIA 5136012626

Diamond specifications and retailer prices

From €6,762 EUR
As of November 4, 2026
Save €2,782 EUR (29%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: €13,509 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 5136012626. Listed at 19 retailers as of November 4, 2026, with a 41% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
OriginNatural
Grading LabGIA
CertificateGIA 5136012626
Dimensions6.92 × 6.91 × 4.20 mm
L/W Ratio1.00
Top View
6.92 mm6.91 mm1.21 ctF / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5136012626
Side View
Table 57.0%CrownGirdle: THN-MEDPavilionCulet: NoneDepth 60.7%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 4
Current: €7,876 EUR|Low: €6,149 EUR|High: €14,757 EUR|Avg: €8,982 EUR
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
November 6, 2026
Retailer 13€6,762 EUR
Retailer 4€6,929 EUR
Retailer 2€7,149 EUR
Retailer 10€7,378 EUR
Retailer 3€7,450 EUR
Retailer 15€7,636 EUR
Retailer 1€7,876 EUR
Retailer 9€8,233 EUR
Retailer 7€8,271 EUR
Retailer 5€8,399 EUR
Retailer 6€9,028 EUR
Retailer 8€9,028 EUR
Retailer 18€9,087 EUR
Retailer 14€9,324 EUR
Retailer 11€9,431 EUR
Retailer 17€9,544 EUR
Retailer 12€11,892 EUR
Retailer 16€12,726 EUR

37 data points across 18 retailers

19 retailers€6,762 EUR to €9,544 EUR

B
Cheapest Retailer
-
€6,762 EUR
B
Retailer 2
-
€6,929 EUR
View
B
Retailer 3
-
€7,149 EUR
View
B
Retailer 4
-
€7,378 EUR
View
Final sale: no returns
B
Retailer 5
-
€7,450 EUR
View
Retailer 6
-
€7,636 EUR
View
Price last confirmed 9 days ago
Retailer 7
-
€7,876 EUR
View
Retailer 8
-
€8,233 EUR
View
Price last confirmed 16 days ago
B
Retailer 9
-
€8,271 EUR
View
B
Retailer 10
-
€8,399 EUR
View
B
Retailer 11
-
€9,028 EUR
View
B
Retailer 12
-
€9,028 EUR
View
B
Retailer 13
-
€9,087 EUR
View
B
Retailer 14
-
€9,324 EUR
View
B
Retailer 15
-
€9,431 EUR
View
B
Retailer 16
-
€9,544 EUR
View
Retailer 17
-
€11,892 EUR
View
Price under review
Retailer 18
-
€12,726 EUR
View
Price under review
Most Expensive
Diamond Quarter
1.21SI2F5126EA3DN · Nov 5
€13,509 EUR
£11,876 GBP
View
Price under review
18 more retailers have this diamond
Prices start from €6,762 EURSave up to €2,782 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.

B
1.21ct Round
€6,762 EUR