CaratHunter
Plans
Cushion|Natural|GIA

1.21ct E SI1 Cushion Natural Diamond

ID • E/SI1 • GIA 6551518018

Certificate GIA 6551518018

Diamond specifications and retailer prices

From $3,708 CAD
As of November 6, 2026
Save $4,524 CAD (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: $8,232 CAD 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 $3,708 to $8,232, a $4,524 spread on the same certified stone. MOH London lists it at $8,232. 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
Color
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: $8,232 CAD|Low: $3,673 CAD|High: $8,603 CAD|Avg: $5,186 CAD|-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$3,708 CAD
Retailer 2$3,864 CAD
Retailer 3$4,425 CAD
Retailer 8$4,494 CAD
Retailer 11$4,542 CAD
Retailer 10$4,922 CAD
Retailer 6$5,062 CAD
Retailer 4$5,161 CAD
Retailer 12$5,218 CAD
Retailer 5$5,728 CAD
Retailer 7$6,006 CAD
MOH London$8,232 CAD

29 data points across 12 retailers

16 retailers$3,708 CAD to $8,232 CAD

A
Cheapest Retailer
-
$3,708 CAD
A
Retailer 2
-
$3,864 CAD
View
B+
Retailer 3
-
$4,425 CAD
View
B+
Retailer 4
-
$4,494 CAD
View
B+
Retailer 5
-
$4,542 CAD
View
Final sale: no returns
B+
Retailer 6
-
$4,730 CAD
View
B+
Retailer 7
-
$4,733 CAD
View
Retailer 8
-
$4,922 CAD
View
Price last confirmed 8 days ago
B+
Retailer 9
-
$5,017 CAD
View
B+
Retailer 10
-
$5,062 CAD
View
B+
Retailer 11
-
$5,161 CAD
View
B+
Retailer 12
-
$5,218 CAD
View
Retailer 13
-
$5,473 CAD
View
Price last confirmed 29 days ago
B+
Retailer 14
-
$5,728 CAD
View
B+
Retailer 15
-
$6,006 CAD
View
Most Expensive
B
MOH London
24DD57394 · Nov 1
$8,232 CAD
£4,608 GBP
View
15 more retailers have this diamond
Prices start from $3,708 CADSave up to $4,524 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
$3,708 CAD