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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 $2,664 CAD
As of November 6, 2026
Save $3,592 CAD (57%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $6,256 CAD 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 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 4, 2026, with prices from $2,664 to $6,256, a $3,592 spread on the same certified stone. MOH London lists it at $6,256. 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
Color
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: $6,256 CAD|Low: $2,646 CAD|High: $6,340 CAD|Avg: $3,862 CAD|-1.2%
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 6, 2026
Retailer 9$2,664 CAD
Retailer 10$3,235 CAD
Retailer 11$3,303 CAD
Retailer 3$3,356 CAD
Retailer 2$3,473 CAD
Retailer 12$3,580 CAD
Retailer 8$3,788 CAD
Retailer 4$3,870 CAD
Retailer 5$3,896 CAD
Retailer 13$4,010 CAD
Retailer 7$4,369 CAD
Retailer 6$4,446 CAD
MOH London$6,256 CAD

31 data points across 13 retailers

14 retailers$2,664 CAD to $6,256 CAD

A
Cheapest Retailer
-
$2,664 CAD
B+
Retailer 2
-
$3,234 CAD
View
B+
Retailer 3
-
$3,235 CAD
View
B+
Retailer 4
-
$3,303 CAD
View
Final sale: no returns
B+
Retailer 5
-
$3,356 CAD
View
B+
Retailer 6
-
$3,473 CAD
View
Retailer 7
-
$3,580 CAD
View
Price last confirmed 30 days ago
B+
Retailer 8
-
$3,704 CAD
View
B+
Retailer 9
-
$3,788 CAD
View
B+
Retailer 10
-
$3,896 CAD
View
Retailer 11
-
$4,010 CAD
View
Price last confirmed 31 days ago
B
Retailer 12
-
$4,369 CAD
View
B
Retailer 13
-
$4,446 CAD
View
Most Expensive
B
MOH London
BFA899C27 · Nov 4
$6,256 CAD
£3,502 GBP
View
13 more retailers have this diamond
Prices start from $2,664 CADSave up to $3,592 CAD

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
$2,664 CAD