Precious stones of the ancient world

Hello,

I am writing to you because I would like to submit a practical idea.

It concerns the transformation of precious stones in the old world: would it be possible to make sure to transform several or all the stones at once, because there, do them one by one, especially in the case of rubies that climb fast, it's a real ordeal !!

Sincerely and waiting for your answer.

Ps: I'm French and I can not speak English very well, so I used google translate for this message; I apologize in advance for any translation errors.