I really do love the concept of building up your statement jewellery and the Monica Vinader pieces are so pretty. As I posted the other day the idea of the stacking rings is so good just buy them as and when you can.
These necklaces are the same, buy the chain in your chosen length and a charm and then add more when you can. You can always use birthdays and christmas as an excuse to add more.
I have used the following to create this necklace:
Rolo 30-32″ Chain £90
Riva Large Pendant £105
Siren Medium Bezel Pendant £75