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Cushion|Natural|GIA

1.20ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 2231900018

Certificate GIA 2231900018

Diamond specifications and retailer prices

From $4,753 AUD
As of November 6, 2026
Save $5,381 AUD (53%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $10,135 AUD at MOH London · As of November 1, 2026
View at MOH London

About this 1.2ct natural cushion diamond

This 1.2ct natural cushion sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2231900018. Listed at 19 retailers as of November 1, 2026, with prices from $4,753 to $10,135, a $5,381 spread on the same certified stone. MOH London lists it at $10,135. 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

1.20
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
Pavilion angle37.38°
OriginNatural
Grading LabGIA
CertificateGIA 2231900018
Dimensions7.09 × 5.47 × 3.78 mm
L/W Ratio1.30
Key to symbols
Crystal, Feather, Needle
Top View
7.09 mm5.47 mm1.20 ctF / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryExcellent
FluorescenceNone
CertificateGIA 2231900018
Side View
Table 67.0%CrownGirdle: THK-ETKPavilion 37.38°Culet: NoneDepth 69.2%

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: $10,135 AUD|Low: $4,602 AUD|High: $10,257 AUD|Avg: $6,714 AUD|-0.1%
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
November 7, 2026
Retailer 5$4,753 AUD
Retailer 3$5,321 AUD
Retailer 8$5,765 AUD
Retailer 9$6,225 AUD
Retailer 11$6,249 AUD
Retailer 2$6,462 AUD
Retailer 10$6,637 AUD
Retailer 12$6,637 AUD
Retailer 4$6,787 AUD
Retailer 13$6,855 AUD
Retailer 6$7,161 AUD
Retailer 7$7,763 AUD
MOH London$10,135 AUD

46 data points across 13 retailers

19 retailers$4,753 AUD to $10,135 AUD

B+
Cheapest Retailer
-
$4,753 AUD
B+
Retailer 2
-
$4,893 AUD
View
B+
Retailer 3
-
$5,072 AUD
View
B+
Retailer 4
-
$5,229 AUD
View
B+
Retailer 5
-
$5,277 AUD
View
B+
Retailer 6
-
$5,321 AUD
View
Final sale: no returns
B+
Retailer 7
-
$5,501 AUD
View
Retailer 8
-
$5,765 AUD
View
Price last confirmed 9 days ago
B
Retailer 9
-
$6,225 AUD
View
B
Retailer 10
-
$6,249 AUD
View
B
Retailer 11
-
$6,462 AUD
View
B
Retailer 12
-
$6,637 AUD
View
B
Retailer 13
-
$6,637 AUD
View
Retailer 14
-
$6,787 AUD
View
Price last confirmed 29 days ago
B
Retailer 15
-
$6,855 AUD
View
B
Retailer 16
-
$7,161 AUD
View
Retailer 17
-
$7,197 AUD
View
Price last confirmed 15 days ago
B
Retailer 18
-
$7,763 AUD
View
Most Expensive
B
MOH London
F854FC011 · Nov 1
$10,135 AUD
£5,483 GBP
View
18 more retailers have this diamond
Prices start from $4,753 AUDSave up to $5,381 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+
1.20ct Cushion
$4,753 AUD