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Cushion|Natural|GIA

1.23ct I SI1 Cushion Natural Diamond

ID • I/SI1 • GIA 2556358703

Certificate GIA 2556358703

Diamond specifications and retailer prices

From HK$12,540 HKD
As of November 6, 2026
Save HK$15,967 HKD (56%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$28,507 HKD at MOH London · As of November 7, 2026
View at MOH London

About this 1.23ct natural cushion diamond

This 1.23ct 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 2556358703. Listed at 20 retailers as of November 6, 2026, with prices from HK$12,540 to HK$28,507, a HK$15,967 spread on the same certified stone. MOH London lists it at HK$28,507. 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

1.23
Carat
I
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2556358703
Dimensions6.14 × 6.13 × 4.09 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
6.14 mm6.13 mm1.23 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2556358703
Side View
Table 66.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 66.6%

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$28,507 HKD|Low: HK$12,336 HKD|High: HK$29,582 HKD|Avg: HK$17,897 HKD|-3.6%
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
November 7, 2026
Retailer 18HK$12,540 HKD
Retailer 6HK$12,665 HKD
Retailer 5HK$13,676 HKD
Retailer 14HK$13,872 HKD
Retailer 11HK$14,515 HKD
Retailer 8HK$14,789 HKD
Retailer 9HK$15,118 HKD
Retailer 16HK$15,150 HKD
Retailer 10HK$15,205 HKD
Retailer 17HK$15,988 HKD
Retailer 4HK$16,012 HKD
Retailer 2HK$17,767 HKD
Retailer 7HK$17,924 HKD
Retailer 13HK$19,962 HKD
Retailer 12HK$22,203 HKD
Retailer 15HK$25,613 HKD
Retailer 3HK$27,274 HKD
MOH LondonHK$28,507 HKD

25 data points across 18 retailers

20 retailersHK$12,540 HKD to HK$28,507 HKD

A
Cheapest Retailer
-
HK$12,540 HKD
A
Retailer 2
-
HK$12,665 HKD
View
A
Retailer 3
-
HK$13,676 HKD
View
Final sale: no returns
A
Retailer 4
-
HK$13,872 HKD
View
A
Retailer 5
-
HK$14,515 HKD
View
A
Retailer 6
-
HK$14,789 HKD
View
A
Retailer 7
-
HK$15,118 HKD
View
A
Retailer 8
-
HK$15,150 HKD
View
A
Retailer 9
-
HK$15,205 HKD
View
A
Retailer 10
-
HK$15,988 HKD
View
A
Retailer 11
-
HK$16,012 HKD
View
A
Retailer 12
-
HK$17,767 HKD
View
A
Retailer 13
-
HK$17,924 HKD
View
B+
Retailer 14
-
HK$17,971 HKD
View
B+
Retailer 15
-
HK$19,962 HKD
View
Retailer 16
-
HK$21,122 HKD
View
Price last confirmed 32 days ago
B+
Retailer 17
-
HK$22,203 HKD
View
B+
Retailer 18
-
HK$25,613 HKD
View
B+
Retailer 19
-
HK$27,274 HKD
View
Most Expensive
B
MOH London
D0851533F · Nov 7
HK$28,507 HKD
£2,864 GBP
View
19 more retailers have this diamond
Prices start from HK$12,540 HKDSave up to HK$15,967 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
1.23ct Cushion
HK$12,540 HKD