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Cushion · Old Mine|Natural|GIA

0.51ct I SI1 Cushion Natural Diamond

I/SI1 • GIA 6565214855

Certificate GIA 6565214855

Diamond specifications and retailer prices

From $754 CAD
$540 USD
As of October 31, 2026
Save $1,006 CAD (57%) vs most expensive(unlock to see where)
3 retailers carry this diamond
Most expensive: $2,890 CAD 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 I colour (near-colourless) and SI1 clarity (slightly-included) and certified by GIA 6565214855. Listed at 3 retailers as of October 31, 2026, with a 133% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
I
Color
SI1
Clarity
-
Cut

Specifications

Cut
PolishExcellent
SymmetryFair
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6565214855
Dimensions4.74 × 4.62 × 3.00 mm
L/W Ratio1.03
Culet sizeVery Large
Top View
4.74 mm4.62 mm0.51 ctI / SI1
OriginNatural
PolishExcellent
SymmetryFair
FluorescenceNone
CertificateGIA 6565214855
Side View
Table 55.0%CrownGirdle: MED-VTKPavilionCulet: Very LargeDepth 64.8%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: $2,890 CAD|Low: $754 CAD|High: $2,890 CAD|Avg: $1,540 CAD
MOH London
Retailer 2
Retailer 3
November 1, 2026
Retailer 3$754 CAD
Retailer 2$1,760 CAD
MOH London$2,890 CAD

2 data points across 3 retailers

3 retailers$754 CAD to $1,760 CAD

B+
Cheapest Retailer
-
$754 CAD
$540 USD
C
Retailer 2
-
$1,760 CAD
$1,260 USD
View
Most Expensive
MOH London
240468541 · Nov 1
$2,890 CAD
£1,629 GBP
View
Price under review
2 more retailers have this diamond
Prices start from $754 CADSave up to $1,006 CAD

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.

B+
0.51ct Cushion
$754 CAD