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Cushion|Natural|GIA

1.51ct I SI1 Cushion Natural Diamond

ID • I/SI1 • GIA 5242081367

Certificate GIA 5242081367

Diamond specifications and retailer prices

From HK$21,467 HKD
As of November 6, 2026
Save HK$29,664 HKD (58%) vs most expensive(unlock to see where)
22 retailers carry this diamond
Most expensive: HK$51,131 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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 5242081367. Listed at 22 retailers as of November 2, 2026, with prices from HK$21,467 to HK$51,131, a HK$29,664 spread on the same certified stone. MOH London lists it at HK$51,131. 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
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 5242081367
Dimensions6.70 × 6.32 × 4.35 mm
L/W Ratio1.06
Girdle conditionFaceted
Top View
6.70 mm6.32 mm1.51 ctI / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 5242081367
Side View
Table 67.0%CrownGirdle: STK-VTKPavilionCulet: NDepth 68.8%

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$51,131 HKD|Low: HK$20,064 HKD|High: HK$51,131 HKD|Avg: HK$29,174 HKD|+3.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
November 7, 2026
Retailer 6HK$21,467 HKD
Retailer 18HK$21,788 HKD
Retailer 17HK$23,261 HKD
Retailer 3HK$23,450 HKD
Retailer 10HK$24,594 HKD
Retailer 12HK$24,711 HKD
Retailer 13HK$24,876 HKD
Retailer 8HK$25,566 HKD
Retailer 7HK$26,004 HKD
Retailer 9HK$26,490 HKD
Retailer 19HK$26,647 HKD
Retailer 2HK$27,251 HKD
Retailer 14HK$28,849 HKD
Retailer 11HK$29,429 HKD
Retailer 5HK$31,412 HKD
Retailer 15HK$34,375 HKD
Retailer 16HK$37,314 HKD
Retailer 4HK$45,190 HKD
MOH LondonHK$51,131 HKD

23 data points across 19 retailers

22 retailersHK$21,467 HKD to HK$51,131 HKD

A
Cheapest Retailer
-
HK$21,467 HKD
A
Retailer 2
-
HK$21,788 HKD
View
A
Retailer 3
-
HK$23,261 HKD
View
A
Retailer 4
-
HK$23,450 HKD
View
A
Retailer 5
-
HK$24,594 HKD
View
A
Retailer 6
-
HK$24,711 HKD
View
A
Retailer 7
-
HK$24,876 HKD
View
A
Retailer 8
-
HK$25,566 HKD
View
Final sale: no returns
A
Retailer 9
-
HK$26,004 HKD
View
A
Retailer 10
-
HK$26,490 HKD
View
A
Retailer 11
-
HK$26,647 HKD
View
A
Retailer 12
-
HK$27,251 HKD
View
Retailer 13
-
HK$28,105 HKD
View
Price last confirmed 19 days ago
A
Retailer 14
-
HK$28,849 HKD
View
Retailer 15
-
HK$28,951 HKD
View
Price last confirmed 19 days ago
A
Retailer 16
-
HK$31,412 HKD
View
Retailer 17
-
HK$31,663 HKD
View
Price last confirmed 30 days ago
B+
Retailer 18
-
HK$34,375 HKD
View
B+
Retailer 19
-
HK$37,314 HKD
View
Retailer 20
-
HK$43,372 HKD
View
Price last confirmed 19 days ago
B
Retailer 21
-
HK$45,190 HKD
View
Most Expensive
B
MOH London
83C7A565F · Nov 2
HK$51,131 HKD
£5,137 GBP
View
21 more retailers have this diamond
Prices start from HK$21,467 HKDSave up to HK$29,664 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$21,467 HKD