SCOLEC-R-01 Origin: India Grade: A Weight: Between 10 and 20g Dimensions: Approximately 20-30mm Origin: India Grade: A = good Tumbled Scolecite stone from India, 20-30mm. Sold individually. Shapes and colors vary from one stone to another. Scolecite was first described in 1813 by two German mineralogists. Its name comes from the Greek σκώληξ (worm in French). Indeed, the stone strangely resembles the insect when it comes into contact with heat. It can potentially release water if heated in a test tube. Scolecite is actually a mineral species that belongs to the silicate group.