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Cushion|Natural|IGI

0.51ct J SI1 Cushion Natural Diamond

VG • J/SI1 • IGI 720529895

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 720529895

Diamond specifications and retailer prices

From HK$2,030 HKD
As of November 6, 2026
Save HK$4,301 HKD (68%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: HK$6,330 HKD at MOH London · As of November 1, 2026
View at MOH London

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded J colour (near-colourless) and SI1 clarity (slightly-included), with a very-good cut grade and certified by IGI 720529895. Listed at 9 retailers as of November 1, 2026, with prices from HK$2,030 to HK$6,330, a HK$4,301 spread on the same certified stone. MOH London lists it at HK$6,330. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.51
Carat
J
Colour
SI1
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.6°
Pavilion angle40.3°
OriginNatural
Grading LabIGI
CertificateIGI 720529895
Dimensions9.05 × 4.14 × 2.42 mm
L/W Ratio2.19
Girdle conditionFaceted
Culet sizePointed
Top View
9.05 mm4.14 mm0.51 ctJ / SI1
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI 720529895
Side View
Table 62.0%Crown 31.6°Girdle: THN-STKPavilion 40.3°Culet: NoneDepth 58.5%

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$6,330 HKD|Low: HK$2,030 HKD|High: HK$6,400 HKD|Avg: HK$3,948 HKD|-1.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 2HK$2,030 HKD
Retailer 3HK$3,347 HKD
Retailer 5HK$3,644 HKD
Retailer 7HK$4,248 HKD
Retailer 6HK$4,467 HKD
Retailer 4HK$5,039 HKD
MOH LondonHK$6,330 HKD

28 data points across 7 retailers

9 retailersHK$2,030 HKD to HK$6,330 HKD

A
Cheapest Retailer
-
HK$2,030 HKD
Retailer 2
-
HK$2,955 HKD
View
Price last confirmed 9 days ago
A
Retailer 3
-
HK$3,347 HKD
View
B+
Retailer 4
-
HK$3,644 HKD
View
B+
Retailer 5
-
HK$3,762 HKD
View
B+
Retailer 6
-
HK$4,248 HKD
View
B+
Retailer 7
-
HK$4,467 HKD
View
B+
Retailer 8
-
HK$5,039 HKD
View
Most Expensive
B
MOH London
48F9D8D51 · Nov 1
HK$6,330 HKD
£636 GBP
View
8 more retailers have this diamond
Prices start from HK$2,030 HKDSave up to HK$4,301 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
0.51ct Cushion
HK$2,030 HKD