Raw moldavite has a rippled ... rare ones have been found up to 10 carats. Catseye specimens, which have a light refracting line that appears to run through the gem, are the most valuable forms of ...

Black tourmaline, often called the “sponge” of crystals, shields against psychic, emotional, and spiritual harm. To use them, place a raw tourmaline in the corners of the room you want to cleanse.