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Cushion|Natural|GIA

1.21ct F SI1 Cushion Natural Diamond

GD • F/SI1 • GIA 1555552860

Certificate GIA 1555552860

Diamond specifications and retailer prices

From $4,713 AUD
As of November 4, 2026
Save $5,720 AUD (55%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $10,432 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 F colour (colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1555552860. Listed at 19 retailers as of November 2, 2026, with prices from $4,713 to $10,432, a $5,720 spread on the same certified stone. MOH London lists it at $10,432. 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
F
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555552860
Dimensions7.35 × 5.50 × 3.68 mm
L/W Ratio1.34
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Cloud, Crystal, Cavity, Needle, Indented Natural
Top View
7.35 mm5.50 mm1.21 ctF / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1555552860
Side View
Table 67.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.0%

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 4
Current: $10,432 AUD|Low: $4,675 AUD|High: $10,445 AUD|Avg: $6,752 AUD|+0.6%
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
Retailer 15
Retailer 16
November 5, 2026
Retailer 14$4,713 AUD
Retailer 11$4,911 AUD
Retailer 5$5,587 AUD
Retailer 2$5,721 AUD
Retailer 4$5,756 AUD
Retailer 8$5,938 AUD
Retailer 12$6,084 AUD
Retailer 15$6,238 AUD
Retailer 9$6,318 AUD
Retailer 3$6,453 AUD
Retailer 7$6,592 AUD
Retailer 6$6,631 AUD
Retailer 10$7,031 AUD
Retailer 13$7,667 AUD
Retailer 16$10,166 AUD
MOH London$10,432 AUD

24 data points across 16 retailers

19 retailers$4,713 AUD to $10,432 AUD

B+
Cheapest Retailer
-
$4,713 AUD
B+
Retailer 2
-
$4,911 AUD
View
Retailer 3
-
$5,587 AUD
View
Price last confirmed 9 days ago
B
Retailer 4
-
$5,721 AUD
View
B
Retailer 5
-
$5,918 AUD
View
B
Retailer 6
-
$5,923 AUD
View
Retailer 7
-
$5,938 AUD
View
Price last confirmed 11 days ago
B
Retailer 8
-
$6,084 AUD
View
Retailer 9
-
$6,238 AUD
View
Price last confirmed 9 days ago
B
Retailer 10
-
$6,318 AUD
View
B
Retailer 11
-
$6,327 AUD
View
B
Retailer 12
-
$6,453 AUD
View
B
Retailer 13
-
$6,592 AUD
View
B
Retailer 14
-
$6,631 AUD
View
Retailer 15
-
$6,928 AUD
View
Price last confirmed 29 days ago
B
Retailer 16
-
$7,031 AUD
View
B
Retailer 17
-
$7,667 AUD
View
Retailer 18
-
$10,166 AUD
View
Price last confirmed 10 days ago
Most Expensive
B
MOH London
59AF216A7 · Nov 2
$10,432 AUD
£5,644 GBP
View
18 more retailers have this diamond
Prices start from $4,713 AUDSave up to $5,720 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
$4,713 AUD