Which one isn't commonly known as one of the 4 C's?
In a Facebook poll of 111 respondents, 64% chose “Certification”. How we count
Certification
64%71
Carat
17.1%19
Colour
13.5%15
Clarity
3.6%4
Cut
1.8%2
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In a Facebook poll of 111 respondents, 64% chose “Certification”. How we count