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Cushion|Natural|GIA

1.21ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 6545899030

Certificate GIA 6545899030

Diamond specifications and retailer prices

From HK$19,343 HKD
As of November 7, 2026
Save HK$16,818 HKD (47%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: HK$36,161 HKD at MOH London · As of November 7, 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 top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545899030. Listed at 7 retailers as of November 7, 2026, with prices from HK$19,343 to HK$36,161, a HK$16,818 spread on the same certified stone. MOH London lists it at HK$36,161. 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
SymmetryExcellent
FluorescenceNone
Crown angle36.88°
Pavilion angle31.2°
OriginNatural
Grading LabGIA
CertificateGIA 6545899030
Dimensions6.38 × 5.82 × 3.83 mm
L/W Ratio1.10
Top View
6.38 mm5.82 mm1.21 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6545899030
Side View
Table 63.0%Crown 36.88°GirdlePavilion 31.2°CuletDepth 65.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 7
Current: HK$36,161 HKD|Low: HK$18,927 HKD|High: HK$36,798 HKD|Avg: HK$24,281 HKD|-1.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 7, 2026
Retailer 3HK$19,343 HKD
Retailer 2HK$20,260 HKD
Retailer 5HK$20,769 HKD
Retailer 6HK$23,246 HKD
Retailer 4HK$26,232 HKD
MOH LondonHK$36,161 HKD

39 data points across 6 retailers

7 retailersHK$19,343 HKD to HK$36,161 HKD

A
Cheapest Retailer
-
HK$19,343 HKD
A
Retailer 2
-
HK$20,260 HKD
View
B+
Retailer 3
-
HK$20,769 HKD
View
B+
Retailer 4
-
HK$21,898 HKD
View
Retailer 5
-
HK$23,246 HKD
View
Price last confirmed 31 days ago
B
Retailer 6
-
HK$26,232 HKD
View
Most Expensive
B
MOH London
EEA6D9B22 · Nov 7
HK$36,161 HKD
£3,633 GBP
View
6 more retailers have this diamond
Prices start from HK$19,343 HKDSave up to HK$16,818 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.

A
1.21ct Cushion
HK$19,343 HKD