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Cushion|Natural|GIA

1.21ct I SI1 Cushion Natural Diamond

ID • I/SI1 • GIA 1309792916

Certificate GIA 1309792916

Diamond specifications and retailer prices

From €1,696 EUR
As of November 6, 2026
Save €2,276 EUR (57%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: €3,972 EUR at MOH London · As of November 7, 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 I 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 1309792916. Listed at 14 retailers as of November 6, 2026, with prices from €1,696 to €3,972, a €2,276 spread on the same certified stone. MOH London lists it at €3,972. 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
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1309792916
Dimensions6.26 × 5.49 × 3.94 mm
L/W Ratio1.14
Key to symbols
Feather, Twinning Wisp, Indented Natural, Natural
Top View
6.26 mm5.49 mm1.21 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 1309792916
Side View
Table 58.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 71.8%

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: €3,972 EUR|Low: €1,685 EUR|High: €4,037 EUR|Avg: €2,459 EUR|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 7, 2026
Retailer 9€1,696 EUR
Retailer 10€2,060 EUR
Retailer 11€2,103 EUR
Retailer 3€2,137 EUR
Retailer 6€2,211 EUR
Retailer 12€2,279 EUR
Retailer 2€2,412 EUR
Retailer 4€2,464 EUR
Retailer 5€2,481 EUR
Retailer 13€2,554 EUR
Retailer 8€2,782 EUR
Retailer 7€2,831 EUR
MOH London€3,972 EUR

32 data points across 13 retailers

14 retailers€1,696 EUR to €3,972 EUR

A
Cheapest Retailer
-
€1,696 EUR
B+
Retailer 2
-
€2,059 EUR
View
B+
Retailer 3
-
€2,060 EUR
View
B+
Retailer 4
-
€2,103 EUR
View
Final sale: no returns
B+
Retailer 5
-
€2,137 EUR
View
B+
Retailer 6
-
€2,211 EUR
View
Retailer 7
-
€2,279 EUR
View
Price last confirmed 30 days ago
B+
Retailer 8
-
€2,358 EUR
View
B+
Retailer 9
-
€2,412 EUR
View
B+
Retailer 10
-
€2,481 EUR
View
Retailer 11
-
€2,554 EUR
View
Price last confirmed 31 days ago
B
Retailer 12
-
€2,782 EUR
View
B
Retailer 13
-
€2,831 EUR
View
Most Expensive
B
MOH London
BFA899C27 · Nov 7
€3,972 EUR
£3,492 GBP
View
13 more retailers have this diamond
Prices start from €1,696 EURSave up to €2,276 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
€1,696 EUR