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Cushion|Natural|GIA

1.21ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 7553811117

Certificate GIA 7553811117

Diamond specifications and retailer prices

From $3,091 AUD
As of November 6, 2026
Save $4,071 AUD (57%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $7,162 AUD 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 7553811117. Listed at 17 retailers as of November 6, 2026, with prices from $3,091 to $7,162, a $4,071 spread on the same certified stone. MOH London lists it at $7,162. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 7553811117
Dimensions7.05 × 5.38 × 3.74 mm
L/W Ratio1.31
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Knot, Feather, Needle
Top View
7.05 mm5.38 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceFaint
CertificateGIA 7553811117
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 69.4%

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: $7,162 AUD|Low: $3,091 AUD|High: $7,277 AUD|Avg: $4,533 AUD|-1.6%
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 13$3,091 AUD
Retailer 6$3,221 AUD
Retailer 11$3,662 AUD
Retailer 4$3,793 AUD
Retailer 7$3,988 AUD
Retailer 5$4,130 AUD
Retailer 9$4,301 AUD
Retailer 3$4,317 AUD
Retailer 2$4,350 AUD
Retailer 12$4,468 AUD
Retailer 8$4,784 AUD
Retailer 10$5,017 AUD
MOH London$7,162 AUD

25 data points across 13 retailers

17 retailers$3,091 AUD to $7,162 AUD

A
Cheapest Retailer
-
$3,091 AUD
A
Retailer 2
-
$3,221 AUD
View
B+
Retailer 3
-
$3,662 AUD
View
B+
Retailer 4
-
$3,793 AUD
View
Final sale: no returns
B+
Retailer 5
-
$3,887 AUD
View
B+
Retailer 6
-
$3,893 AUD
View
B+
Retailer 7
-
$3,988 AUD
View
Retailer 8
-
$4,130 AUD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
$4,141 AUD
View
B+
Retailer 10
-
$4,301 AUD
View
B+
Retailer 11
-
$4,317 AUD
View
B+
Retailer 12
-
$4,350 AUD
View
B
Retailer 13
-
$4,468 AUD
View
Retailer 14
-
$4,675 AUD
View
Price last confirmed 31 days ago
B+
Retailer 15
-
$4,784 AUD
View
B
Retailer 16
-
$5,017 AUD
View
Most Expensive
B
MOH London
A1072B078 · Nov 7
$7,162 AUD
£3,875 GBP
View
16 more retailers have this diamond
Prices start from $3,091 AUDSave up to $4,071 AUD

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
$3,091 AUD