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Cushion|Natural|GIA

1.21ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 5231993495

Certificate GIA 5231993495

Diamond specifications and retailer prices

From $3,260 AUD
As of November 6, 2026
Save $3,869 AUD (54%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $7,129 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 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 5231993495. Listed at 15 retailers as of November 6, 2026, with prices from $3,260 to $7,129, a $3,869 spread on the same certified stone. MOH London lists it at $7,129. 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
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.4°
Pavilion angle36.5°
OriginNatural
Grading LabGIA
CertificateGIA 5231993495
Dimensions6.42 × 6.10 × 4.01 mm
L/W Ratio1.05
Culet sizeNone
Top View
6.42 mm6.10 mm1.21 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5231993495
Side View
Table 59.0%Crown 38.4°Girdle: MED-ETKPavilion 36.5°Culet: NoneDepth 65.6%

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: $7,129 AUD|Low: $3,216 AUD|High: $7,554 AUD|Avg: $4,478 AUD|-5.6%
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
Retailer 14
November 7, 2026
Retailer 10$3,260 AUD
Retailer 2$3,317 AUD
Retailer 9$3,480 AUD
Retailer 3$3,583 AUD
Retailer 14$3,656 AUD
Retailer 5$3,995 AUD
Retailer 4$4,206 AUD
Retailer 12$4,206 AUD
Retailer 13$4,352 AUD
Retailer 7$4,548 AUD
Retailer 8$4,698 AUD
Retailer 6$4,768 AUD
Retailer 11$5,251 AUD
MOH London$7,129 AUD

41 data points across 14 retailers

15 retailers$3,260 AUD to $7,129 AUD

A
Cheapest Retailer
-
$3,260 AUD
A
Retailer 2
-
$3,317 AUD
View
A
Retailer 3
-
$3,480 AUD
View
A
Retailer 4
-
$3,583 AUD
View
Final sale: no returns
A
Retailer 5
-
$3,656 AUD
View
B+
Retailer 6
-
$3,995 AUD
View
B+
Retailer 7
-
$4,206 AUD
View
B+
Retailer 8
-
$4,206 AUD
View
B+
Retailer 9
-
$4,352 AUD
View
B+
Retailer 10
-
$4,548 AUD
View
B+
Retailer 11
-
$4,698 AUD
View
Retailer 12
-
$4,768 AUD
View
Price last confirmed 31 days ago
Retailer 13
-
$5,180 AUD
View
Price last confirmed 15 days ago
B+
Retailer 14
-
$5,251 AUD
View
Most Expensive
B
MOH London
B80125C31 · Nov 7
$7,129 AUD
£3,857 GBP
View
14 more retailers have this diamond
Prices start from $3,260 AUDSave up to $3,869 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
$3,260 AUD