CaratHunter
Plans
Cushion|Natural|GIA

1.51ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 1553050279

Certificate GIA 1553050279

Diamond specifications and retailer prices

From HK$24,605 HKD
As of November 1, 2026
Save HK$31,116 HKD (56%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: HK$55,722 HKD at MOH London · As of November 1, 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 H 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 1553050279. Listed at 10 retailers as of November 1, 2026, with prices from HK$24,605 to HK$55,722, a HK$31,116 spread on the same certified stone. MOH London lists it at HK$55,722. 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
H
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle36.22°
OriginNatural
Grading LabGIA
CertificateGIA 1553050279
Dimensions7.56 × 5.92 × 4.14 mm
L/W Ratio1.28
Key to symbols
Feather, Crystal, Needle
Top View
7.56 mm5.92 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1553050279
Side View
Table 65.0%CrownGirdle: STK-VTKPavilion 36.22°Culet: NoneDepth 69.9%

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 1
Current: HK$55,722 HKD|Low: HK$24,405 HKD|High: HK$57,326 HKD|Avg: HK$35,088 HKD|-2.8%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 2, 2026
Retailer 6HK$24,605 HKD
Retailer 4HK$28,828 HKD
Retailer 5HK$29,635 HKD
Retailer 2HK$30,867 HKD
Retailer 8HK$31,069 HKD
Retailer 9HK$33,864 HKD
Retailer 7HK$35,590 HKD
Retailer 3HK$38,127 HKD
MOH LondonHK$55,722 HKD

35 data points across 9 retailers

10 retailersHK$24,605 HKD to HK$55,722 HKD

A
Cheapest Retailer
-
HK$24,605 HKD
A
Retailer 2
-
HK$28,828 HKD
€3,499 EUR
View
A
Retailer 3
-
HK$29,635 HKD
$3,777 USD
View
A
Retailer 4
-
HK$30,867 HKD
£3,098 GBP
View
A
Retailer 5
-
HK$31,069 HKD
SGD 5,351 SGD
View
A
Retailer 6
-
HK$33,864 HKD
$4,316 USD
View
Final sale: no returns
A
Retailer 7
-
HK$35,590 HKD
$4,536 USD
View
B+
Retailer 8
-
HK$35,843 HKD
A$7,028 AUD
View
B+
Retailer 9
-
HK$38,127 HKD
€4,628 EUR
View
Most Expensive
B
MOH London
3EE8400D9 · Nov 1
HK$55,722 HKD
£5,592 GBP
View
9 more retailers have this diamond
Prices start from HK$24,605 HKDSave up to HK$31,116 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$24,605 HKD