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Cushion|Natural|GIA

1.51ct F SI1 Cushion Natural Diamond

EX • F/SI1 • GIA 2557433923

Certificate GIA 2557433923

Diamond specifications and retailer prices

From HK$38,419 HKD
As of November 6, 2026
Save HK$37,238 HKD (49%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$75,657 HKD at MOH London · As of November 7, 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 F 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 2557433923. Listed at 8 retailers as of November 6, 2026, with prices from HK$38,419 to HK$75,657, a HK$37,238 spread on the same certified stone. MOH London lists it at HK$75,657. 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
F
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2557433923
Dimensions7.67 × 6.00 × 4.15 mm
L/W Ratio1.28
Key to symbols
Crystal, Cloud, Feather, Needle
Top View
7.67 mm6.00 mm1.51 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2557433923
Side View
Table 63.0%CrownGirdle: STK-VTKPavilionCulet: NDepth 69.3%

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$75,657 HKD|Low: HK$38,419 HKD|High: HK$82,803 HKD|Avg: HK$52,301 HKD|-8.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 7, 2026
Retailer 5HK$38,419 HKD
Retailer 2HK$42,690 HKD
Retailer 4HK$43,654 HKD
Retailer 6HK$45,927 HKD
Retailer 8HK$46,546 HKD
Retailer 7HK$48,858 HKD
Retailer 3HK$56,570 HKD
MOH LondonHK$75,657 HKD

42 data points across 8 retailers

8 retailersHK$38,419 HKD to HK$75,657 HKD

A
Cheapest Retailer
-
HK$38,419 HKD
A
Retailer 2
-
HK$42,690 HKD
View
Retailer 3
-
HK$43,654 HKD
View
Price last confirmed 3 days ago
B+
Retailer 4
-
HK$45,927 HKD
View
Retailer 5
-
HK$46,546 HKD
View
Price last confirmed 24 days ago
B+
Retailer 6
-
HK$48,858 HKD
View
Final sale: no returns
B+
Retailer 7
-
HK$56,570 HKD
View
Most Expensive
B
MOH London
4AF0B12A7 · Nov 7
HK$75,657 HKD
£7,601 GBP
View
7 more retailers have this diamond
Prices start from HK$38,419 HKDSave up to HK$37,238 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$38,419 HKD