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Cushion|Natural|GIA

1.20ct K SI1 Cushion Natural Diamond

EX • K/SI1 • GIA 1555689564

Certificate GIA 1555689564

Diamond specifications and retailer prices

From HK$18,347 HKD
As of November 6, 2026
Save HK$17,555 HKD (49%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$35,902 HKD at MOH London · As of November 2, 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 1555689564. Listed at 8 retailers as of November 2, 2026, with prices from HK$18,347 to HK$35,902, a HK$17,555 spread on the same certified stone. MOH London lists it at HK$35,902. 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
K
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1555689564
Dimensions7.26 × 5.38 × 3.70 mm
L/W Ratio1.35
Culet sizeNone
Key to symbols
Feather, Crystal, Cloud, Cavity, Needle
Top View
7.26 mm5.38 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1555689564
Side View
Table 63.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 68.8%

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 6
Current: HK$35,902 HKD|Low: HK$13,880 HKD|High: HK$36,330 HKD|Avg: HK$19,564 HKD|+44.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 3HK$13,880 HKD
Retailer 11HK$14,217 HKD
Retailer 10HK$15,534 HKD
Retailer 8HK$18,347 HKD
Retailer 6HK$19,374 HKD
Retailer 2HK$19,688 HKD
Retailer 7HK$20,260 HKD
Retailer 9HK$21,592 HKD
Retailer 4HK$22,971 HKD
Retailer 5HK$25,009 HKD
MOH LondonHK$35,902 HKD

34 data points across 11 retailers

8 retailersHK$18,347 HKD to HK$35,902 HKD

B+
Cheapest Retailer
-
HK$18,347 HKD
B+
Retailer 2
-
HK$19,374 HKD
View
B+
Retailer 3
-
HK$19,688 HKD
View
B
Retailer 4
-
HK$20,260 HKD
View
B
Retailer 5
-
HK$21,592 HKD
View
B
Retailer 6
-
HK$22,971 HKD
View
B
Retailer 7
-
HK$25,009 HKD
View
Most Expensive
B
MOH London
57F3EF09A · Nov 2
HK$35,902 HKD
£3,607 GBP
View
7 more retailers have this diamond
Prices start from HK$18,347 HKDSave up to HK$17,555 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+
1.20ct Cushion
HK$18,347 HKD