Cushion|Natural|GIA

1.21ct J SI1 Cushion Natural Diamond

EX • J/SI1 • GIA 5513610130

Certificate GIA 5513610130

Diamond specifications and retailer prices

From €1,521 EUR
As of November 5, 2026
Save €1,628 EUR (52%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €3,149 EUR at MOH London · As of November 4, 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 J colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5513610130. Listed at 12 retailers as of November 4, 2026, with prices from €1,521 to €3,149, a €1,628 spread on the same certified stone. MOH London lists it at €3,149. 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
J
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle40°
Pavilion angle36.99°
OriginNatural
Grading LabGIA
CertificateGIA 5513610130
Dimensions6.31 × 5.80 × 3.99 mm
L/W Ratio1.09
Top View
6.31 mm5.80 mm1.21 ctJ / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5513610130
Side View
Table 62.0%Crown 40°Girdle: STK-VTKPavilion 36.99°Culet: NoneDepth 68.8%

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 5
Current: €3,149 EUR|Low: €1,418 EUR|High: €3,281 EUR|Avg: €2,058 EUR|-3.0%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 5€1,521 EUR
Retailer 9€1,523 EUR
Retailer 6€1,640 EUR
Retailer 2€1,747 EUR
Retailer 3€1,856 EUR
Retailer 8€1,919 EUR
Retailer 7€2,033 EUR
Retailer 10€2,033 EUR
Retailer 11€2,096 EUR
Retailer 4€2,454 EUR
MOH London€3,149 EUR

36 data points across 11 retailers

12 retailers€1,521 EUR to €3,149 EUR

A
Cheapest Retailer
-
€1,521 EUR
A
Retailer 2
-
€1,523 EUR
View
Final sale: no returns
B+
Retailer 3
-
€1,640 EUR
View
B+
Retailer 4
-
€1,642 EUR
View
B+
Retailer 5
-
€1,747 EUR
View
B+
Retailer 6
-
€1,856 EUR
View
B+
Retailer 7
-
€1,919 EUR
View
B
Retailer 8
-
€2,033 EUR
View
B
Retailer 9
-
€2,033 EUR
View
B
Retailer 10
-
€2,096 EUR
View
B
Retailer 11
-
€2,454 EUR
View
Most Expensive
B
MOH London
E8E9572A0 · Nov 4
€3,149 EUR
£2,768 GBP
View
11 more retailers have this diamond
Prices start from €1,521 EURSave up to €1,628 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
€1,521 EUR