DD is 9 months and I am thinking of birthday gifts for her already.. I was thinking of buying her a diamond every year.. About .30ct and when she turns 18 or gets married (I haven't quite decided when) then we can use the stones to make it into a bracelet and we can pick out the style together. DH wants to buy a 0.50ct every year, but I think it might be too large.. Taken into consideration if she grows up to be around my size, her bracelet only needs to be 6" long. What size would be better? And aside from the diamond, she will be getting toys too!