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Cushion|Natural|GIA

1.21ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 2307390593

Certificate GIA 2307390593

Diamond specifications and retailer prices

From HK$30,299 HKD
As of November 5, 2026
Save HK$17,448 HKD (37%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$47,747 HKD at Steven Stone · As of November 7, 2026
View at Steven Stone

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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 2307390593. Listed at 8 retailers as of November 5, 2026, with prices from HK$30,299 to HK$47,747, a HK$17,448 spread on the same certified stone. Steven Stone lists it at HK$47,747. 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

1.21
Carat
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2307390593
Dimensions6.26 × 5.78 × 3.92 mm
L/W Ratio1.08
Top View
6.26 mm5.78 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 2307390593
Side View
Table 59.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 67.9%

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 5
Current: HK$42,220 HKD|Low: HK$28,066 HKD|High: HK$47,747 HKD|Avg: HK$37,224 HKD|+0.7%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Steven Stone
November 7, 2026
Retailer 6HK$30,299 HKD
Retailer 2HK$30,872 HKD
Retailer 4HK$39,500 HKD
Retailer 5HK$39,500 HKD
Retailer 3HK$40,833 HKD
Retailer 1HK$42,220 HKD
Steven StoneHK$47,747 HKD

36 data points across 7 retailers

8 retailersHK$30,299 HKD to HK$47,747 HKD

B+
Cheapest Retailer
-
HK$30,299 HKD
B+
Retailer 2
-
HK$30,872 HKD
View
Final sale: no returns
B
Retailer 3
-
HK$32,063 HKD
View
B
Retailer 4
-
HK$39,500 HKD
View
B
Retailer 5
-
HK$39,500 HKD
View
B
Retailer 6
-
HK$40,833 HKD
View
B
Retailer 7
-
HK$42,220 HKD
View
Most Expensive
Steven Stone
6936280 · Nov 7
HK$47,747 HKD
£4,797 GBP
View
7 more retailers have this diamond
Prices start from HK$30,299 HKDSave up to HK$17,448 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+
1.21ct Cushion
HK$30,299 HKD