M. Sturman Jewellery presents an unusual new stone:  Lodenite -- aka "Aquarium" because each stone looks as if you're peering into an aquarium, some deep sea place.  Each stone differs from another by "scene" and colorway.  Each of the 18" necklaces are paired with different stones:  this one is paired with crazy-cut dark amethysts alternating with hammered light amethysts, dyed purple seed pearls, and a purple-hued agate clasp.