Specifics - what do they mean

[noleennoleen]

I have come across these specifics but I don't understand what it means (attachment). Can anyone break this down into simple terms please

 

[tyty333]

Mm designates the diamond size along with the number of diamonds that size needed.

Edit - For example...you need 1 6.3mm stone. A well cut 1 carat stone is 6.5mm.

 

[noleennoleen]

Ok this completely makes sense now lol. Thank you