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Cushion|Natural|GIA

1.51ct D SI1 Cushion Natural Diamond

EX • D/SI1 • GIA 6511643903

Certificate GIA 6511643903

Diamond specifications and retailer prices

From HK$34,837 HKD
As of November 6, 2026
Save HK$25,123 HKD (42%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$59,960 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 D 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 6511643903. Listed at 11 retailers as of November 4, 2026, with prices from HK$34,837 to HK$59,960, a HK$25,123 spread on the same certified stone. MOH London lists it at HK$59,960. 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
D
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6511643903
Dimensions7.13 × 5.95 × 4.15 mm
L/W Ratio1.20
Top View
7.13 mm5.95 mm1.51 ctD / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6511643903
Side View
Table 69.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 69.8%

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$59,960 HKD|Low: HK$34,837 HKD|High: HK$60,846 HKD|Avg: HK$42,095 HKD|-1.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 9HK$34,837 HKD
Retailer 2HK$35,119 HKD
Retailer 8HK$36,013 HKD
Retailer 5HK$37,165 HKD
Retailer 11HK$37,745 HKD
Retailer 10HK$38,051 HKD
Retailer 3HK$38,928 HKD
Retailer 4HK$42,479 HKD
Retailer 6HK$46,053 HKD
Retailer 7HK$52,166 HKD
MOH LondonHK$59,960 HKD

33 data points across 11 retailers

11 retailersHK$34,837 HKD to HK$59,960 HKD

A
Cheapest Retailer
-
HK$34,837 HKD
Final sale: no returns
A
Retailer 2
-
HK$35,119 HKD
View
A
Retailer 3
-
HK$36,013 HKD
View
A
Retailer 4
-
HK$37,165 HKD
View
Retailer 5
-
HK$37,745 HKD
View
Price last confirmed 9 days ago
Retailer 6
-
HK$38,051 HKD
View
Price last confirmed 29 days ago
A
Retailer 7
-
HK$38,928 HKD
View
A
Retailer 8
-
HK$42,479 HKD
View
A
Retailer 9
-
HK$46,053 HKD
View
B+
Retailer 10
-
HK$52,166 HKD
View
Most Expensive
B+
MOH London
69AF21D71 · Nov 4
HK$59,960 HKD
£6,024 GBP
View
10 more retailers have this diamond
Prices start from HK$34,837 HKDSave up to HK$25,123 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$34,837 HKD