The Amsterdam diamond cutters were and are of excellent standard. They were granted to cut the rough diamond that became the Cullinan, once the largest diamond in the world. The qualities 'stubborn' and 'determined' are like charcoal and diamond.

‍

Are you ever seen as stubborn? Or do you consider yourself more determined?  

And then we may well gossip: Who do you think is really stubborn? And who do you think is a diamond in the rough?