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Cushion|Natural|GIA

1.21ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 6555416527

Certificate GIA 6555416527

Diamond specifications and retailer prices

From $2,644 AUD
As of November 6, 2026
Save $3,475 AUD (57%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: $6,120 AUD at MOH London · As of November 4, 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 6555416527. Listed at 18 retailers as of November 4, 2026, with prices from $2,644 to $6,120, a $3,475 spread on the same certified stone. MOH London lists it at $6,120. 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 6555416527
Dimensions6.21 × 6.14 × 4.03 mm
L/W Ratio1.01
Girdle conditionFaceted
Top View
6.21 mm6.14 mm1.21 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555416527
Side View
Table 65.0%CrownGirdle: MED-THKPavilionCulet: 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: $6,120 AUD|Low: $2,608 AUD|High: $6,244 AUD|Avg: $3,616 AUD|-2.0%
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
November 7, 2026
Retailer 6$2,644 AUD
Retailer 9$2,675 AUD
Retailer 15$2,902 AUD
Retailer 8$2,927 AUD
Retailer 10$3,094 AUD
Retailer 14$3,122 AUD
Retailer 3$3,195 AUD
Retailer 4$3,275 AUD
Retailer 13$3,317 AUD
Retailer 7$3,326 AUD
Retailer 2$3,379 AUD
Retailer 5$3,598 AUD
Retailer 12$4,275 AUD
Retailer 11$4,347 AUD
Retailer 16$5,404 AUD
MOH London$6,120 AUD

24 data points across 16 retailers

18 retailers$2,644 AUD to $6,120 AUD

A
Cheapest Retailer
-
$2,644 AUD
A
Retailer 2
-
$2,675 AUD
View
A
Retailer 3
-
$2,902 AUD
View
A
Retailer 4
-
$2,927 AUD
View
Final sale: no returns
A
Retailer 5
-
$3,094 AUD
View
A
Retailer 6
-
$3,122 AUD
View
A
Retailer 7
-
$3,195 AUD
View
A
Retailer 8
-
$3,275 AUD
View
A
Retailer 9
-
$3,317 AUD
View
A
Retailer 10
-
$3,326 AUD
View
A
Retailer 11
-
$3,379 AUD
View
B+
Retailer 12
-
$3,598 AUD
View
B+
Retailer 13
-
$3,697 AUD
View
B+
Retailer 14
-
$4,275 AUD
View
B+
Retailer 15
-
$4,347 AUD
View
Retailer 16
-
$4,371 AUD
View
Price last confirmed 31 days ago
B
Retailer 17
-
$5,404 AUD
View
Most Expensive
B
MOH London
948ED028E · Nov 4
$6,120 AUD
£3,311 GBP
View
17 more retailers have this diamond
Prices start from $2,644 AUDSave up to $3,475 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
$2,644 AUD