Sodalite

I was kicking around in my mess, mainly because George knocked a box of odds and ends over and I saw a bag of this speckled blue and white tumbled stones that reminded me of the blue and white porcelain dishes. When I looked at the tag it said: Sodalite Quartz. Well, I had never heard it called that before so I decided a little research was in order.
It belongs to the silicates family and is seldom used as anything but cabs because it has poor cleavage and uneven to conchoidal fracture. That means you can't cut it like a most gemstones. It's hardness is 5.5 to 6.
That last number is very important if you storing your stones together in a bag. If you mix soft with hard stones, you will scratch the soft stones.
Quartz is SiO2 which is an oxide and has a hardness of 7.
Technically, Sodalite and Quartz would be distant cousins. Sodalite is closer to Lapis Lazuli. Both are sodium aluminums with the same hardness and both are used to access the subconscious or deeper layers of consciousness.
With that little digging completed, I scratched Quartz off the tag.
Thus, if your question in a working is whether you can get off using Sodalite (which is relatively inexpensive) as a substitute for Lapis Lazuli (which can be really pricey) the answer is yes. However, Lapis usually has gold in it and you can't substitute sodalite if you are using it in a money spell.