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Cushion|Natural|GIA

1.51ct K SI1 Cushion Natural Diamond

GD • K/SI1 • GIA 6445506666

Certificate GIA 6445506666

Diamond specifications and retailer prices

From HK$17,791 HKD
As of November 4, 2026
Save HK$19,813 HKD (53%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$37,604 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 standard cut grade stated by the retailer rather than the lab and certified by GIA 6445506666. Listed at 15 retailers as of November 4, 2026, with prices from HK$17,791 to HK$37,604, a HK$19,813 spread on the same certified stone. MOH London lists it at HK$37,604. 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
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishVery Good
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6445506666
Dimensions6.60 × 5.95 × 4.24 mm
L/W Ratio1.11
Top View
6.60 mm5.95 mm1.51 ctK / SI1
OriginNatural
CutGood
PolishVery Good
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6445506666
Side View
Table 66.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 71.2%

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 4
Current: HK$37,604 HKD|Low: HK$17,791 HKD|High: HK$38,112 HKD|Avg: HK$24,164 HKD|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 6HK$17,791 HKD
Retailer 7HK$19,272 HKD
Retailer 8HK$20,424 HKD
Retailer 3HK$21,663 HKD
Retailer 2HK$23,928 HKD
Retailer 4HK$25,989 HKD
Retailer 5HK$27,517 HKD
MOH LondonHK$37,604 HKD

38 data points across 8 retailers

15 retailersHK$17,791 HKD to HK$37,604 HKD

B+
Cheapest Retailer
-
HK$17,791 HKD
B+
Retailer 2
-
HK$18,300 HKD
View
B+
Retailer 3
-
HK$19,272 HKD
View
B+
Retailer 4
-
HK$20,181 HKD
View
Retailer 5
-
HK$20,424 HKD
View
Price last confirmed 9 days ago
B+
Retailer 6
-
HK$20,730 HKD
View
B+
Retailer 7
-
HK$20,808 HKD
View
B+
Retailer 8
-
HK$21,663 HKD
View
B+
Retailer 9
-
HK$22,015 HKD
View
B+
Retailer 10
-
HK$22,180 HKD
View
B+
Retailer 11
-
HK$23,928 HKD
View
B+
Retailer 12
-
HK$25,989 HKD
View
Retailer 13
-
HK$26,185 HKD
View
Price last confirmed 15 days ago
B+
Retailer 14
-
HK$27,517 HKD
View
Most Expensive
B
MOH London
6ED3F1AE5 · Nov 4
HK$37,604 HKD
£3,778 GBP
View
14 more retailers have this diamond
Prices start from HK$17,791 HKDSave up to HK$19,813 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+
1.51ct Cushion
HK$17,791 HKD