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Cushion|Natural|GIA

1.21ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 1455976885

Certificate GIA 1455976885

Diamond specifications and retailer prices

From $3,486 AUD
As of November 6, 2026
Save $3,595 AUD (51%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: $7,081 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 1455976885. Listed at 10 retailers as of November 6, 2026, with prices from $3,486 to $7,081, a $3,595 spread on the same certified stone. MOH London lists it at $7,081. 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
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 1455976885
Dimensions6.43 × 5.85 × 4.02 mm
L/W Ratio1.10
Key to symbols
Crystal, Cloud, Needle
Top View
6.43 mm5.85 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1455976885
Side View
Table 61.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 68.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $7,081 AUD|Low: $3,099 AUD|High: $7,205 AUD|Avg: $4,670 AUD|-0.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 7, 2026
Retailer 4$3,406 AUD
Retailer 5$3,560 AUD
Retailer 2$4,561 AUD
Retailer 3$4,711 AUD
MOH London$7,081 AUD

44 data points across 5 retailers

10 retailers$3,486 AUD to $7,081 AUD

Retailer 1
-
$3,406 AUD
Price last confirmed 10 days ago
B+
Retailer 2
-
$3,486 AUD
View
B+
Retailer 3
-
$3,560 AUD
View
Final sale: no returns
B+
Retailer 4
-
$4,222 AUD
View
B
Retailer 5
-
$4,454 AUD
View
B
Retailer 6
-
$4,454 AUD
View
B+
Retailer 7
-
$4,561 AUD
View
B
Retailer 8
-
$4,599 AUD
View
B+
Retailer 9
-
$4,711 AUD
View
Most Expensive
B
MOH London
D2D4E4548 · Nov 7
$7,081 AUD
£3,831 GBP
View
9 more retailers have this diamond
Prices start from $3,486 AUDSave up to $3,595 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.

B+
1.21ct Cushion
$3,486 AUD