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Cushion|Natural|GIA

1.20ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 1559310061

Certificate GIA 1559310061

Diamond specifications and retailer prices

From HK$13,543 HKD
As of November 6, 2026
Save HK$16,875 HKD (55%) vs most expensive(unlock to see where)
21 retailers carry this diamond
Most expensive: HK$30,418 HKD at MOH London · As of November 7, 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 1559310061. Listed at 21 retailers as of November 6, 2026, with prices from HK$13,543 to HK$30,418, a HK$16,875 spread on the same certified stone. MOH London lists it at HK$30,418. 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
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1559310061
Dimensions6.15 × 6.03 × 4.00 mm
L/W Ratio1.02
Girdle conditionFaceted
Top View
6.15 mm6.03 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1559310061
Side View
Table 65.0%CrownGirdle: STK-VTKPavilionCulet: NoneDepth 66.4%

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$30,418 HKD|Low: HK$13,339 HKD|High: HK$31,762 HKD|Avg: HK$18,413 HKD|-4.2%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 7, 2026
Retailer 7HK$13,543 HKD
Retailer 10HK$13,621 HKD
Retailer 9HK$14,593 HKD
Retailer 17HK$14,821 HKD
Retailer 12HK$15,792 HKD
Retailer 16HK$15,902 HKD
Retailer 3HK$16,067 HKD
Retailer 11HK$16,129 HKD
Retailer 4HK$16,184 HKD
Retailer 5HK$16,694 HKD
Retailer 13HK$16,929 HKD
Retailer 8HK$17,117 HKD
Retailer 6HK$17,932 HKD
Retailer 19HK$17,979 HKD
Retailer 2HK$18,967 HKD
Retailer 15HK$21,302 HKD
Retailer 14HK$21,678 HKD
Retailer 18HK$27,470 HKD
MOH LondonHK$30,418 HKD

19 data points across 19 retailers

21 retailersHK$13,543 HKD to HK$30,418 HKD

A
Cheapest Retailer
-
HK$13,543 HKD
A
Retailer 2
-
HK$13,621 HKD
View
A
Retailer 3
-
HK$14,593 HKD
View
Final sale: no returns
A
Retailer 4
-
HK$14,821 HKD
View
A
Retailer 5
-
HK$15,792 HKD
View
A
Retailer 6
-
HK$15,902 HKD
View
A
Retailer 7
-
HK$16,067 HKD
View
A
Retailer 8
-
HK$16,129 HKD
View
A
Retailer 9
-
HK$16,184 HKD
View
A
Retailer 10
-
HK$16,694 HKD
View
A
Retailer 11
-
HK$16,929 HKD
View
A
Retailer 12
-
HK$17,117 HKD
View
A
Retailer 13
-
HK$17,932 HKD
View
A
Retailer 14
-
HK$17,979 HKD
View
B+
Retailer 15
-
HK$18,967 HKD
View
B+
Retailer 16
-
HK$19,194 HKD
View
B+
Retailer 17
-
HK$21,302 HKD
View
B+
Retailer 18
-
HK$21,678 HKD
View
Retailer 19
-
HK$23,042 HKD
View
Price last confirmed 31 days ago
B
Retailer 20
-
HK$27,470 HKD
View
Most Expensive
B
MOH London
E22E25E2B · Nov 7
HK$30,418 HKD
£3,056 GBP
View
20 more retailers have this diamond
Prices start from HK$13,543 HKDSave up to HK$16,875 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$13,543 HKD