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Cushion|Natural|GIA

1.51ct K SI1 Cushion Natural Diamond

VG • K/SI1 • GIA 5556305352

Certificate GIA 5556305352

Diamond specifications and retailer prices

From HK$18,457 HKD
As of November 6, 2026
Save HK$21,287 HKD (54%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: HK$39,744 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 K colour (faint-tinted) and SI1 clarity (slightly-included), with a very-good cut grade stated by the retailer rather than the lab and certified by GIA 5556305352. Listed at 17 retailers as of November 4, 2026, with prices from HK$18,457 to HK$39,744, a HK$21,287 spread on the same certified stone. MOH London lists it at HK$39,744. 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
K
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5556305352
Dimensions7.51 × 5.76 × 4.19 mm
L/W Ratio1.30
Girdle conditionFaceted
Top View
7.51 mm5.76 mm1.51 ctK / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 5556305352
Side View
Table 68.0%CrownGirdle: STK-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$39,744 HKD|Low: HK$18,151 HKD|High: HK$41,526 HKD|Avg: HK$25,258 HKD|-4.3%
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
November 7, 2026
Retailer 4HK$18,457 HKD
Retailer 6HK$18,488 HKD
Retailer 12HK$19,703 HKD
Retailer 13HK$19,931 HKD
Retailer 14HK$20,025 HKD
Retailer 16HK$21,200 HKD
Retailer 8HK$21,514 HKD
Retailer 5HK$22,650 HKD
Retailer 9HK$23,120 HKD
Retailer 3HK$23,199 HKD
Retailer 7HK$24,437 HKD
Retailer 2HK$25,291 HKD
Retailer 10HK$27,737 HKD
Retailer 11HK$29,085 HKD
Retailer 15HK$38,074 HKD
MOH LondonHK$39,744 HKD

25 data points across 16 retailers

17 retailersHK$18,457 HKD to HK$39,744 HKD

A
Cheapest Retailer
-
HK$18,457 HKD
A
Retailer 2
-
HK$18,488 HKD
View
A
Retailer 3
-
HK$19,703 HKD
View
A
Retailer 4
-
HK$19,931 HKD
View
Final sale: no returns
A
Retailer 5
-
HK$20,025 HKD
View
A
Retailer 6
-
HK$21,200 HKD
View
B+
Retailer 7
-
HK$21,514 HKD
View
A
Retailer 8
-
HK$22,650 HKD
View
A
Retailer 9
-
HK$23,120 HKD
View
A
Retailer 10
-
HK$23,199 HKD
View
Retailer 11
-
HK$24,437 HKD
View
Price last confirmed 18 days ago
B+
Retailer 12
-
HK$25,291 HKD
View
B+
Retailer 13
-
HK$25,762 HKD
View
B+
Retailer 14
-
HK$27,737 HKD
View
B+
Retailer 15
-
HK$29,085 HKD
View
B
Retailer 16
-
HK$38,074 HKD
View
Most Expensive
B
MOH London
83913B52F · Nov 4
HK$39,744 HKD
£3,993 GBP
View
16 more retailers have this diamond
Prices start from HK$18,457 HKDSave up to HK$21,287 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$18,457 HKD