People give more detail im not going to repeat me
1. You could do a necklace
2. The first thing I thought was one ruby in the middle and two sapphires right next to it (ruby is the red one, sapphire the blue one) because the rest of the necklace is gold
3. Just look up the 12 types of precious stones and write the 10 that are left
4. I’d say something like Cleopatra
If you mean what side does he identify with, the answer is neither. The prince is a neutral party.