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Cushion|Natural|GIA

1.51ct I SI1 Cushion Natural Diamond

GD • I/SI1 • GIA 6555305528

Certificate GIA 6555305528

Diamond specifications and retailer prices

From HK$31,898 HKD
As of November 6, 2026
Save HK$35,557 HKD (53%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: HK$67,455 HKD at MOH London · As of November 4, 2026
View at MOH London

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 6555305528. Listed at 20 retailers as of November 4, 2026, with prices from HK$31,898 to HK$67,455, a HK$35,557 spread on the same certified stone. MOH London lists it at HK$67,455. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
I
Colour
SI1
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555305528
Dimensions7.40 × 5.68 × 4.14 mm
L/W Ratio1.30
Girdle conditionFaceted
Top View
7.40 mm5.68 mm1.51 ctI / SI1
OriginNatural
CutGood
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555305528
Side View
Table 66.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 72.8%

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$67,455 HKD|Low: HK$31,538 HKD|High: HK$68,390 HKD|Avg: HK$41,883 HKD|-1.4%
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 6HK$31,898 HKD
Retailer 9HK$31,898 HKD
Retailer 16HK$34,022 HKD
Retailer 10HK$35,370 HKD
Retailer 8HK$35,503 HKD
Retailer 15HK$35,629 HKD
Retailer 11HK$35,801 HKD
Retailer 3HK$36,248 HKD
Retailer 4HK$37,518 HKD
Retailer 7HK$38,051 HKD
Retailer 5HK$38,168 HKD
Retailer 12HK$40,073 HKD
Retailer 2HK$41,131 HKD
Retailer 18HK$41,358 HKD
Retailer 13HK$47,785 HKD
Retailer 14HK$51,805 HKD
Retailer 17HK$65,967 HKD
MOH LondonHK$67,455 HKD

22 data points across 18 retailers

20 retailersHK$31,898 HKD to HK$67,455 HKD

A
Cheapest Retailer
-
HK$31,898 HKD
A
Retailer 2
-
HK$31,898 HKD
View
B+
Retailer 3
-
HK$34,022 HKD
View
B+
Retailer 4
-
HK$35,370 HKD
View
B+
Retailer 5
-
HK$35,503 HKD
View
Final sale: no returns
B+
Retailer 6
-
HK$35,629 HKD
View
B+
Retailer 7
-
HK$35,801 HKD
View
B+
Retailer 8
-
HK$36,248 HKD
View
B+
Retailer 9
-
HK$37,518 HKD
View
B+
Retailer 10
-
HK$38,051 HKD
View
B+
Retailer 11
-
HK$38,168 HKD
View
B+
Retailer 12
-
HK$40,073 HKD
View
B+
Retailer 13
-
HK$41,131 HKD
View
B+
Retailer 14
-
HK$41,358 HKD
View
B
Retailer 15
-
HK$41,405 HKD
View
Retailer 16
-
HK$43,286 HKD
View
Price last confirmed 29 days ago
B
Retailer 17
-
HK$47,785 HKD
View
B
Retailer 18
-
HK$51,805 HKD
View
B
Retailer 19
-
HK$65,967 HKD
View
Most Expensive
B
MOH London
5528D845F · Nov 4
HK$67,455 HKD
£6,777 GBP
View
19 more retailers have this diamond
Prices start from HK$31,898 HKDSave up to HK$35,557 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
1.51ct Cushion
HK$31,898 HKD