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Cushion|Natural|GIA

1.51ct I SI2 Cushion Natural Diamond

EX • I/SI2 • GIA 6551796873

Certificate GIA 6551796873

Diamond specifications and retailer prices

From HK$20,659 HKD
As of November 6, 2026
Save HK$26,869 HKD (57%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$47,528 HKD at MOH London · As of November 2, 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 I colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551796873. Listed at 8 retailers as of November 2, 2026, with prices from HK$20,659 to HK$47,528, a HK$26,869 spread on the same certified stone. MOH London lists it at HK$47,528. 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
I
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle35.97°
OriginNatural
Grading LabGIA
CertificateGIA 6551796873
Dimensions7.56 × 5.87 × 4.09 mm
L/W Ratio1.29
Key to symbols
Crystal, Cloud, Feather, Knot, Needle
Top View
7.56 mm5.87 mm1.51 ctI / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6551796873
Side View
Table 64.0%CrownGirdle: MED-VTKPavilion 35.97°Culet: NoneDepth 69.7%

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$47,528 HKD|Low: HK$20,659 HKD|High: HK$52,505 HKD|Avg: HK$31,837 HKD|-9.4%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2HK$20,659 HKD
Retailer 7HK$25,699 HKD
Retailer 3HK$27,149 HKD
Retailer 5HK$28,755 HKD
Retailer 6HK$30,127 HKD
Retailer 4HK$33,278 HKD
MOH LondonHK$47,528 HKD

43 data points across 7 retailers

8 retailersHK$20,659 HKD to HK$47,528 HKD

A
Cheapest Retailer
-
HK$20,659 HKD
A
Retailer 2
-
HK$25,699 HKD
View
A
Retailer 3
-
HK$27,149 HKD
View
A
Retailer 4
-
HK$28,755 HKD
View
A
Retailer 5
-
HK$30,127 HKD
View
A
Retailer 6
-
HK$31,318 HKD
View
A
Retailer 7
-
HK$33,278 HKD
View
Most Expensive
B
MOH London
FA73139D7 · Nov 2
HK$47,528 HKD
£4,775 GBP
View
7 more retailers have this diamond
Prices start from HK$20,659 HKDSave up to HK$26,869 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$20,659 HKD