So we now know the gem placements of Yellow, Blue and White Diamond

I surmise that these placements are also how the Homeworld Insignia is made, pay attention to where the diamonds are placed

At the top is White, White Diamond’s gem is on her forehead.

Bellow White at equal height is Yellow and Blue, Yellow and Blue Diamond’s gems are on their chests.



Now Pink Diamond is on the bottom bellow the other three… Going along with the idea that the gems are placed in a corresponding location with the insignia, Pink Diamonds gem would be somewhere around…