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Cushion|Natural|GIA

1.51ct E SI1 Cushion Natural Diamond

EX • E/SI1 • GIA 6405967587

Certificate GIA 6405967587

Diamond specifications and retailer prices

From HK$40,903 HKD
As of November 6, 2026
Save HK$39,312 HKD (49%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: HK$80,215 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 E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6405967587. Listed at 25 retailers as of November 4, 2026, with prices from HK$40,903 to HK$80,215, a HK$39,312 spread on the same certified stone. MOH London lists it at HK$80,215. 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

1.51
Carat
E
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
OriginNatural
Grading LabGIA
CertificateGIA 6405967587
Dimensions6.51 × 6.05 × 4.51 mm
L/W Ratio1.08
Top View
6.51 mm6.05 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 6405967587
Side View
Table 60.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 74.6%

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$80,215 HKD|Low: HK$43,067 HKD|High: HK$81,400 HKD|Avg: HK$55,571 HKD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 6, 2026
Retailer 8HK$43,067 HKD
Retailer 6HK$43,137 HKD
Retailer 9HK$43,545 HKD
Retailer 2HK$50,802 HKD
Retailer 4HK$51,844 HKD
Retailer 7HK$52,989 HKD
Retailer 3HK$59,313 HKD
Retailer 5HK$66,610 HKD
MOH LondonHK$80,215 HKD

34 data points across 9 retailers

25 retailersHK$40,903 HKD to HK$80,215 HKD

A
Cheapest Retailer
-
HK$40,903 HKD
A
Retailer 2
-
HK$42,651 HKD
View
Retailer 3
-
HK$43,067 HKD
View
Price last confirmed 9 days ago
A
Retailer 4
-
HK$43,137 HKD
View
A
Retailer 5
-
HK$43,545 HKD
View
Final sale: no returns
A
Retailer 6
-
HK$43,709 HKD
View
A
Retailer 7
-
HK$45,692 HKD
View
A
Retailer 8
-
HK$46,006 HKD
View
A
Retailer 9
-
HK$46,452 HKD
View
Retailer 10
-
HK$49,462 HKD
View
Price last confirmed 8 days ago
B+
Retailer 11
-
HK$50,802 HKD
View
B+
Retailer 12
-
HK$51,453 HKD
View
B+
Retailer 13
-
HK$51,844 HKD
View
B+
Retailer 14
-
HK$52,166 HKD
View
Retailer 15
-
HK$52,989 HKD
View
Price last confirmed 15 days ago
B+
Retailer 16
-
HK$55,019 HKD
View
B+
Retailer 17
-
HK$55,019 HKD
View
B+
Retailer 18
-
HK$56,900 HKD
View
B+
Retailer 19
-
HK$59,313 HKD
View
Retailer 20
-
HK$60,176 HKD
View
Price last confirmed 14 days ago
B
Retailer 21
-
HK$61,876 HKD
View
B
Retailer 22
-
HK$62,542 HKD
View
B+
Retailer 23
-
HK$66,610 HKD
View
B
Retailer 24
-
HK$79,142 HKD
View
Most Expensive
B
MOH London
A7CF1D2F7 · Nov 4
HK$80,215 HKD
£8,059 GBP
View
24 more retailers have this diamond
Prices start from HK$40,903 HKDSave up to HK$39,312 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$40,903 HKD