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Cushion|Natural|GIA

1.21ct I SI1 Cushion Natural Diamond

ID • I/SI1 • GIA 1309792916

Certificate GIA 1309792916

Diamond specifications and retailer prices

From HK$14,844 HKD
As of November 6, 2026
Save HK$19,914 HKD (57%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$34,758 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 I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1309792916. Listed at 14 retailers as of November 6, 2026, with prices from HK$14,844 to HK$34,758, a HK$19,914 spread on the same certified stone. MOH London lists it at HK$34,758. 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
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 1309792916
Dimensions6.26 × 5.49 × 3.94 mm
L/W Ratio1.14
Key to symbols
Feather, Twinning Wisp, Indented Natural, Natural
Top View
6.26 mm5.49 mm1.21 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceStrong
CertificateGIA 1309792916
Side View
Table 58.0%CrownGirdle: Very ThickPavilionCulet: NoneDepth 71.8%

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$34,758 HKD|Low: HK$14,742 HKD|High: HK$35,325 HKD|Avg: HK$21,521 HKD|-1.5%
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 9HK$14,844 HKD
Retailer 10HK$18,026 HKD
Retailer 11HK$18,402 HKD
Retailer 3HK$18,700 HKD
Retailer 6HK$19,351 HKD
Retailer 12HK$19,946 HKD
Retailer 2HK$21,106 HKD
Retailer 4HK$21,561 HKD
Retailer 5HK$21,710 HKD
Retailer 13HK$22,344 HKD
Retailer 8HK$24,343 HKD
Retailer 7HK$24,774 HKD
MOH LondonHK$34,758 HKD

32 data points across 13 retailers

14 retailersHK$14,844 HKD to HK$34,758 HKD

A
Cheapest Retailer
-
HK$14,844 HKD
B+
Retailer 2
-
HK$18,018 HKD
View
B+
Retailer 3
-
HK$18,026 HKD
View
B+
Retailer 4
-
HK$18,402 HKD
View
Final sale: no returns
B+
Retailer 5
-
HK$18,700 HKD
View
B+
Retailer 6
-
HK$19,351 HKD
View
Retailer 7
-
HK$19,946 HKD
View
Price last confirmed 30 days ago
B+
Retailer 8
-
HK$20,636 HKD
View
B+
Retailer 9
-
HK$21,106 HKD
View
B+
Retailer 10
-
HK$21,710 HKD
View
Retailer 11
-
HK$22,344 HKD
View
Price last confirmed 31 days ago
B
Retailer 12
-
HK$24,343 HKD
View
B
Retailer 13
-
HK$24,774 HKD
View
Most Expensive
B
MOH London
BFA899C27 · Nov 7
HK$34,758 HKD
£3,492 GBP
View
13 more retailers have this diamond
Prices start from HK$14,844 HKDSave up to HK$19,914 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$14,844 HKD