Add an attribute to all items without combinations

[47diamonddistrict.com]

We have a diamond store from which we created a .csv with all combinations for our items attributes (carat,color,cut,clarity,metal type), which give us around 2000 different combinations.

 

The problem is that we also need to add a attribute for ring size, which contains around 30 values. If we created all the combinations for all the different ring size it will gives us more than 60000 different combinations. It already takes us a lot of time to upload 2000 combinations, I don't think we will be able to upload that quantity of combinations.

 

Is there a way to add a new attribute by default to each item, without having to create the combinations for it? It does not affect the price...

 

One item on our store without the ring size attribute:

http://47diamonddistrict.com/prestashop/index.php?id_product=4700002&controller=product#/carat-050/cut-very_good/metal-14k_white_gold/clarity-i1/color-h

 

Thank you for your help!

[47diamonddistrict.com]

ideas anyone?