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Cushion|Natural|GIA

1.21ct E SI1 Cushion Natural Diamond

ID • E/SI1 • GIA 6551518018

Certificate GIA 6551518018

Diamond specifications and retailer prices

From HK$20,659 HKD
As of November 6, 2026
Save HK$25,206 HKD (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: HK$45,866 HKD at MOH London · As of November 1, 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 E 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 6551518018. Listed at 16 retailers as of November 1, 2026, with prices from HK$20,659 to HK$45,866, a HK$25,206 spread on the same certified stone. MOH London lists it at HK$45,866. 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
E
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6551518018
Dimensions7.09 × 5.46 × 3.75 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle, Indented Natural
Top View
7.09 mm5.46 mm1.21 ctE / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6551518018
Side View
Table 64.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 68.7%

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 6
Current: HK$45,866 HKD|Low: HK$20,463 HKD|High: HK$47,936 HKD|Avg: HK$28,897 HKD|-4.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 9HK$20,659 HKD
Retailer 2HK$21,529 HKD
Retailer 3HK$24,656 HKD
Retailer 8HK$25,040 HKD
Retailer 11HK$25,307 HKD
Retailer 10HK$27,423 HKD
Retailer 6HK$28,207 HKD
Retailer 4HK$28,755 HKD
Retailer 12HK$29,077 HKD
Retailer 5HK$31,914 HKD
Retailer 7HK$33,466 HKD
MOH LondonHK$45,866 HKD

29 data points across 12 retailers

16 retailersHK$20,659 HKD to HK$45,866 HKD

A
Cheapest Retailer
-
HK$20,659 HKD
A
Retailer 2
-
HK$21,529 HKD
View
B+
Retailer 3
-
HK$24,656 HKD
View
B+
Retailer 4
-
HK$25,040 HKD
View
B+
Retailer 5
-
HK$25,307 HKD
View
Final sale: no returns
B+
Retailer 6
-
HK$26,357 HKD
View
B+
Retailer 7
-
HK$26,373 HKD
View
Retailer 8
-
HK$27,423 HKD
View
Price last confirmed 9 days ago
B+
Retailer 9
-
HK$27,956 HKD
View
B+
Retailer 10
-
HK$28,207 HKD
View
B+
Retailer 11
-
HK$28,755 HKD
View
B+
Retailer 12
-
HK$29,077 HKD
View
Retailer 13
-
HK$30,495 HKD
View
Price last confirmed 30 days ago
B+
Retailer 14
-
HK$31,914 HKD
View
B+
Retailer 15
-
HK$33,466 HKD
View
Most Expensive
B
MOH London
24DD57394 · Nov 1
HK$45,866 HKD
£4,608 GBP
View
15 more retailers have this diamond
Prices start from HK$20,659 HKDSave up to HK$25,206 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$20,659 HKD