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Cushion|Natural|GIA

1.21ct E SI1 Cushion Natural Diamond

ID • E/SI1 • GIA 6551518018

Certificate GIA 6551518018

Diamond specifications and retailer prices

From €2,361 EUR
As of November 6, 2026
Save €2,881 EUR (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: €5,242 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded E 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 6551518018. Listed at 16 retailers as of November 1, 2026, with prices from €2,361 to €5,242, a €2,881 spread on the same certified stone. MOH London lists it at €5,242. 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
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6551518018
Dimensions7.09 × 5.46 × 3.75 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle, Indented Natural
Top View
7.09 mm5.46 mm1.21 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6551518018
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.7%

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: €5,242 EUR|Low: €2,339 EUR|High: €5,478 EUR|Avg: €3,302 EUR|-4.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 9€2,361 EUR
Retailer 2€2,460 EUR
Retailer 3€2,818 EUR
Retailer 8€2,862 EUR
Retailer 11€2,892 EUR
Retailer 10€3,134 EUR
Retailer 6€3,223 EUR
Retailer 4€3,286 EUR
Retailer 12€3,323 EUR
Retailer 5€3,647 EUR
Retailer 7€3,824 EUR
MOH London€5,242 EUR

29 data points across 12 retailers

16 retailers€2,361 EUR to €5,242 EUR

A
Cheapest Retailer
-
€2,361 EUR
A
Retailer 2
-
€2,460 EUR
View
B+
Retailer 3
-
€2,818 EUR
View
B+
Retailer 4
-
€2,862 EUR
View
B+
Retailer 5
-
€2,892 EUR
View
Final sale: no returns
B+
Retailer 6
-
€3,012 EUR
View
B+
Retailer 7
-
€3,014 EUR
View
Retailer 8
-
€3,134 EUR
View
Price last confirmed 8 days ago
B+
Retailer 9
-
€3,195 EUR
View
B+
Retailer 10
-
€3,223 EUR
View
B+
Retailer 11
-
€3,286 EUR
View
B+
Retailer 12
-
€3,323 EUR
View
Retailer 13
-
€3,485 EUR
View
Price last confirmed 29 days ago
B+
Retailer 14
-
€3,647 EUR
View
B+
Retailer 15
-
€3,824 EUR
View
Most Expensive
B
MOH London
24DD57394 · Nov 1
€5,242 EUR
£4,608 GBP
View
15 more retailers have this diamond
Prices start from €2,361 EURSave up to €2,881 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 Cushion
€2,361 EUR