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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 HK$25,597 HKD
As of November 6, 2026
Save HK$28,689 HKD (53%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: HK$54,286 HKD at MOH London · As of November 7, 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 21 retailers as of November 6, 2026, with prices from HK$25,597 to HK$54,286, a HK$28,689 spread on the same certified stone. MOH London lists it at HK$54,286. 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
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: HK$54,286 HKD|Low: HK$24,782 HKD|High: HK$55,232 HKD|Avg: HK$36,130 HKD|-1.6%
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
November 7, 2026
Retailer 7HK$25,597 HKD
Retailer 5HK$28,654 HKD
Retailer 12HK$31,044 HKD
Retailer 13HK$33,521 HKD
Retailer 15HK$33,654 HKD
Retailer 9HK$34,798 HKD
Retailer 3HK$35,739 HKD
Retailer 14HK$35,739 HKD
Retailer 8HK$36,499 HKD
Retailer 6HK$36,546 HKD
Retailer 4HK$36,914 HKD
Retailer 10HK$38,560 HKD
Retailer 11HK$41,805 HKD
Retailer 2HK$43,208 HKD
MOH LondonHK$54,286 HKD

46 data points across 15 retailers

21 retailersHK$25,597 HKD to HK$54,286 HKD

B+
Cheapest Retailer
-
HK$25,597 HKD
B+
Retailer 2
-
HK$26,349 HKD
View
B+
Retailer 3
-
HK$27,313 HKD
View
B+
Retailer 4
-
HK$28,160 HKD
View
B+
Retailer 5
-
HK$28,418 HKD
View
B+
Retailer 6
-
HK$28,654 HKD
View
Final sale: no returns
B+
Retailer 7
-
HK$29,625 HKD
View
Retailer 8
-
HK$31,044 HKD
View
Price last confirmed 9 days ago
B
Retailer 9
-
HK$33,521 HKD
View
B
Retailer 10
-
HK$33,654 HKD
View
B
Retailer 11
-
HK$34,798 HKD
View
B
Retailer 12
-
HK$35,739 HKD
View
B
Retailer 13
-
HK$35,739 HKD
View
Retailer 14
-
HK$36,499 HKD
View
Retailer 15
-
HK$36,546 HKD
View
Price last confirmed 29 days ago
B
Retailer 16
-
HK$36,914 HKD
View
B
Retailer 17
-
HK$38,560 HKD
View
Retailer 18
-
HK$38,756 HKD
View
Price last confirmed 15 days ago
B
Retailer 19
-
HK$41,805 HKD
View
Retailer 20
-
HK$43,208 HKD
View
Most Expensive
B
MOH London
F854FC011 · Nov 7
HK$54,286 HKD
£5,454 GBP
View
20 more retailers have this diamond
Prices start from HK$25,597 HKDSave up to HK$28,689 HKD

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
HK$25,597 HKD