Cavansite is a very rare mineral mainly used at a collectors item.
Cavansite is primarily used as a collector's mineral due to its vibrant blue color and rarity. It is also believed to have metaphysical properties that promote intuition, insight, and communication. However, it is not commonly used for commercial or industrial purposes.
Fermium hasn't uses.
Some important uses for Onyx are Gemstones, Ornamental stones, Birth stones, and Decoration.
chemistry
There are many important uses for copper. Copper can be used in pipes and in wiring as a few examples.
jewelry and art
microchips
It is used to make jewelry.
jewelery, chemicals, gemstone
Lawrencium has any use.
Francium has any use.
Nuclear power. Military use.