Cushion|Natural|GIA

1.20ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6422353225

Certificate GIA 6422353225

Diamond specifications and retailer prices

From HK$8,621 HKD
As of November 6, 2026
Save HK$7,069 HKD (45%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$20,345 HKD at MOH London · As of October 26, 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 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 6422353225. Listed at 14 retailers as of November 5, 2026, with a 82% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6422353225
Dimensions6.01 × 5.97 × 4.16 mm
L/W Ratio1.01
Top View
6.01 mm5.97 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateGIA 6422353225
Side View
Table 63.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 69.7%

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$20,345 HKD|Low: HK$8,527 HKD|High: HK$20,534 HKD|Avg: HK$13,168 HKD|-0.9%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 7, 2026
Retailer 5HK$8,621 HKD
Retailer 7HK$8,731 HKD
Retailer 6HK$11,372 HKD
Retailer 3HK$12,657 HKD
Retailer 10HK$13,214 HKD
Retailer 11HK$13,324 HKD
Retailer 9HK$14,115 HKD
Retailer 2HK$14,578 HKD
Retailer 4HK$15,690 HKD
Retailer 8HK$16,059 HKD
MOH LondonHK$20,345 HKD

27 data points across 11 retailers

14 retailersHK$8,621 HKD to HK$15,690 HKD

A
Cheapest Retailer
-
HK$8,621 HKD
Retailer 2
-
HK$8,731 HKD
View
Price last confirmed 11 days ago
Retailer 3
-
HK$11,372 HKD
View
Price last confirmed 10 days ago
Retailer 4
-
HK$11,976 HKD
View
Price last confirmed 11 days ago
A
Retailer 5
-
HK$12,571 HKD
View
Retailer 6
-
HK$12,657 HKD
View
Price last confirmed 13 days ago
Retailer 7
-
HK$13,316 HKD
View
Price last confirmed 11 days ago
Retailer 8
-
HK$13,324 HKD
View
Price last confirmed 10 days ago
Retailer 9
-
HK$14,115 HKD
View
Price last confirmed 12 days ago
B+
Retailer 10
-
HK$14,578 HKD
View
Retailer 11
-
HK$15,283 HKD
View
Price last confirmed 33 days ago
A
Retailer 12
-
HK$15,690 HKD
View
Retailer 13
-
HK$16,059 HKD
View
Price last confirmed 11 days ago
Most Expensive
MOH London
09338FB64 · Oct 26
HK$20,345 HKD
£2,044 GBP
View
Price last confirmed 11 days ago
13 more retailers have this diamond
Prices start from HK$8,621 HKDSave up to HK$7,069 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
1.20ct Cushion
HK$8,621 HKD