Cassiterite Crystals #1 measure approximately 3/16" to 1/2" (6mm to 14mm) and weigh approximately .1 to .2 grams. These are lovely little black crystals. Please let me pick one for you. These are $3.00 USD each.
(Healing Crystal)
Hardness: 6.0 - 7.0
Origin: Elsmore, Inverell, New South Wales, Australia
Cassiterite is grounding and protecting, of course. It will even protect you against physical danger. It can be useful to help solve problems, especially in the science disciplines. It can alleviate any feelings of rejection, disapproval, or separateness that you may experience.