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Cushion|Natural|GIA

1.21ct I SI2 Cushion Natural Diamond

GD • I/SI2 • GIA 5306799709

Certificate GIA 5306799709

Diamond specifications and retailer prices

From $2,539 AUD
HK$13,900 HKD
As of November 1, 2026
Save $3,421 AUD (57%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $5,960 AUD at MOH London · As of November 2, 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 SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 5306799709. Listed at 11 retailers as of November 1, 2026, with prices from $2,539 to $5,960, a $3,421 spread on the same certified stone. MOH London lists it at $5,960. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.21
Carat
I
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryVery Good
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 5306799709
Dimensions6.36 × 5.55 × 3.94 mm
L/W Ratio1.15
Top View
6.36 mm5.55 mm1.21 ctI / SI2
OriginNatural
CutGood
PolishVery Good
SymmetryVery Good
FluorescenceMedium
CertificateGIA 5306799709
Side View
Table 57.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 71.1%

Caratlytics Score

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

Price History

Last verified: Nov 1
Current: $5,960 AUD|Low: $2,502 AUD|High: $6,024 AUD|Avg: $3,641 AUD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 6$2,539 AUD
Retailer 9$3,074 AUD
Retailer 8$3,141 AUD
Retailer 11$3,212 AUD
Retailer 4$3,276 AUD
Retailer 2$3,364 AUD
Retailer 5$3,635 AUD
Retailer 10$3,670 AUD
Retailer 12$3,696 AUD
Retailer 3$4,100 AUD
Retailer 7$4,249 AUD
MOH London$5,960 AUD

26 data points across 12 retailers

11 retailers$2,539 AUD to $5,960 AUD

B+
Cheapest Retailer
-
$2,539 AUD
HK$13,900 HKD
B+
Retailer 2
-
$3,074 AUD
$2,154 USD
View
B+
Retailer 3
-
$3,141 AUD
$2,201 USD
View
Final sale: no returns
B+
Retailer 4
-
$3,212 AUD
$2,251 USD
View
B+
Retailer 5
-
$3,364 AUD
£1,856 GBP
View
B
Retailer 6
-
$3,519 AUD
SGD 3,333 SGD
View
B
Retailer 7
-
$3,635 AUD
£2,006 GBP
View
B
Retailer 8
-
$3,670 AUD
$2,572 USD
View
B
Retailer 9
-
$3,696 AUD
$2,590 USD
View
B
Retailer 10
-
$4,249 AUD
€2,836 EUR
View
Most Expensive
C
MOH London
6F4A4A01C · Nov 2
$5,960 AUD
£3,289 GBP
View
10 more retailers have this diamond
Prices start from $2,539 AUDSave up to $3,421 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
$2,539 AUD