Globo Product Options, Variant

I make rings, I needed to be able to offer these rings in different sizes. I inlay these rings with local beach sand. I needed to be able to offer each size ring with each beach sand. This caused shopify to decide that the inventory for each ring size was governed by the amount of sand options available.
This app, just the free option has enabled me to have the correct inventory displaying which I couldn't do with Shopify alone.

I asked for some help as things were displaying a little differently via preview and live but the agent, Mike helped me out quickly and efficiently, thanks Mike!