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Cushion|Natural|GIA

1.21ct D SI1 Cushion Natural Diamond

D/SI1 • GIA 1567014123

Certificate GIA 1567014123

Diamond specifications and retailer prices

From $4,545 AUD
As of November 6, 2026
Save $1,856 AUD (29%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: $6,401 AUD at Blue Nile · As of October 31, 2026
View at Blue Nile

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included) and certified by GIA 1567014123. Listed at 7 retailers as of October 31, 2026, with prices from $4,545 to $6,401, a $1,856 spread on the same certified stone. Blue Nile lists it at $6,401. 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
D
Colour
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1567014123
Dimensions7.47 × 5.67 × 3.68 mm
L/W Ratio1.32
Top View
7.47 mm5.67 mm1.21 ctD / SI1
OriginNatural
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1567014123
Side View
Table 68.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 65.0%

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 6
Current: $6,401 AUD|Low: $4,526 AUD|High: $6,462 AUD|Avg: $5,325 AUD|-0.9%
Blue Nile
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 6$4,545 AUD
Retailer 2$4,548 AUD
Retailer 3$4,564 AUD
Retailer 5$5,558 AUD
Retailer 4$5,749 AUD
Retailer 7$6,081 AUD
Blue Nile$6,401 AUD

44 data points across 7 retailers

7 retailers$4,545 AUD to $6,401 AUD

B+
Cheapest Retailer
-
$4,545 AUD
Final sale: no returns
B+
Retailer 2
-
$4,548 AUD
View
B+
Retailer 3
-
$4,564 AUD
View
B+
Retailer 4
-
$5,558 AUD
View
Retailer 5
-
$5,749 AUD
View
Price last confirmed 11 days ago
B
Retailer 6
-
$6,081 AUD
View
Most Expensive
B
Blue Nile
30380913 · Oct 31
$6,401 AUD
$4,398 USD
View
6 more retailers have this diamond
Prices start from $4,545 AUDSave up to $1,856 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
$4,545 AUD