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Cushion|Natural|GIA

1.21ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 2307390593

Certificate GIA 2307390593

Diamond specifications and retailer prices

From €3,463 EUR
As of November 5, 2026
Save €1,994 EUR (37%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: €5,457 EUR at Steven Stone · As of November 7, 2026
View at Steven Stone

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion 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 2307390593. Listed at 8 retailers as of November 5, 2026, with prices from €3,463 to €5,457, a €1,994 spread on the same certified stone. Steven Stone lists it at €5,457. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2307390593
Dimensions6.26 × 5.78 × 3.92 mm
L/W Ratio1.08
Top View
6.26 mm5.78 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2307390593
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 5
Current: €4,825 EUR|Low: €3,207 EUR|High: €5,457 EUR|Avg: €4,254 EUR|+0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Steven Stone
November 7, 2026
Retailer 6€3,463 EUR
Retailer 2€3,528 EUR
Retailer 4€4,514 EUR
Retailer 5€4,514 EUR
Retailer 3€4,666 EUR
Retailer 1€4,825 EUR
Steven Stone€5,457 EUR

36 data points across 7 retailers

8 retailers€3,463 EUR to €5,457 EUR

B+
Cheapest Retailer
-
€3,463 EUR
B+
Retailer 2
-
€3,528 EUR
View
Final sale: no returns
B
Retailer 3
-
€3,664 EUR
View
B
Retailer 4
-
€4,514 EUR
View
B
Retailer 5
-
€4,514 EUR
View
B
Retailer 6
-
€4,666 EUR
View
B
Retailer 7
-
€4,825 EUR
View
Most Expensive
Steven Stone
6936280 · Nov 7
€5,457 EUR
£4,797 GBP
View
7 more retailers have this diamond
Prices start from €3,463 EURSave up to €1,994 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 Cushion
€3,463 EUR