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Cushion|Natural|GIA

1.21ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 6542928365

Certificate GIA 6542928365

Diamond specifications and retailer prices

From $2,253 AUD
As of November 6, 2026
Save $2,913 AUD (56%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $5,166 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 H 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 6542928365. Listed at 20 retailers as of November 6, 2026, with prices from $2,253 to $5,166, a $2,913 spread on the same certified stone. MOH London lists it at $5,166. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6542928365
Dimensions5.93 × 5.93 × 4.05 mm
L/W Ratio1.00
Top View
5.93 mm5.93 mm1.21 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6542928365
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.4%

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: $5,166 AUD|Low: $2,235 AUD|High: $5,325 AUD|Avg: $3,092 AUD|-3.0%
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
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 7, 2026
Retailer 17$2,253 AUD
Retailer 11$2,447 AUD
Retailer 8$2,457 AUD
Retailer 10$2,479 AUD
Retailer 9$2,601 AUD
Retailer 12$2,659 AUD
Retailer 6$2,685 AUD
Retailer 3$2,765 AUD
Retailer 5$2,778 AUD
Retailer 13$2,876 AUD
Retailer 4$2,940 AUD
Retailer 16$2,940 AUD
Retailer 18$2,940 AUD
Retailer 19$3,042 AUD
Retailer 2$3,219 AUD
Retailer 7$3,617 AUD
Retailer 15$3,618 AUD
Retailer 14$4,026 AUD
MOH London$5,166 AUD

29 data points across 19 retailers

20 retailers$2,253 AUD to $5,166 AUD

A
Cheapest Retailer
-
$2,253 AUD
A
Retailer 2
-
$2,447 AUD
View
A
Retailer 3
-
$2,457 AUD
View
A
Retailer 4
-
$2,479 AUD
View
Final sale: no returns
A
Retailer 5
-
$2,601 AUD
View
A
Retailer 6
-
$2,659 AUD
View
Retailer 7
-
$2,685 AUD
View
Price last confirmed 9 days ago
A
Retailer 8
-
$2,765 AUD
View
A
Retailer 9
-
$2,778 AUD
View
A
Retailer 10
-
$2,876 AUD
View
A
Retailer 11
-
$2,940 AUD
View
A
Retailer 12
-
$2,940 AUD
View
A
Retailer 13
-
$2,940 AUD
View
A
Retailer 14
-
$3,042 AUD
View
A
Retailer 15
-
$3,219 AUD
View
B+
Retailer 16
-
$3,617 AUD
View
B+
Retailer 17
-
$3,618 AUD
View
Retailer 18
-
$3,832 AUD
View
Price last confirmed 34 days ago
B+
Retailer 19
-
$4,026 AUD
View
Most Expensive
B
MOH London
185DF668A · Nov 7
$5,166 AUD
£2,795 GBP
View
19 more retailers have this diamond
Prices start from $2,253 AUDSave up to $2,913 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
$2,253 AUD