Scolecite has an Orthorhombic crystal system and is in the family of silicates and has typical zeolite associations. It is a close relative to Natrolite in that it is the calcium equivalent. It forms in sprays like many zeolites and is found much of the time side by side with Natrolite. Its name is derived from the Greek word for ‘worm’ because it is generally fused with volcanic, wormlike extrusions.

Scolecite’s coloring is generally clear to white. It has turned out to be relatively abundant in Denmark, Iceland, India and Brazil. It is found in deposits where it has formed sprays as long as six inches. In its tumbled form, it first appears to look like it could be Rainbow Moonstone or Selenite. But it is harder than Selenite, and there is none of the ‘flash’ of Moonstone. And when held, it has a completely different feel in its energy.