Sterling Silver Poison Ring with Blue Topaz Shop » Silver Jewellery » Sterling Silver Poison Ring with Blue Topaz Sterling Silver Poison Ring with Blue Topaz A highly detailed lady's ring with a secret compartment! $89.00 1 This snuff ring or poison ring contains a genuine faceted blue topaz on top and weighs a total of 5.9 grams. The ring is a size #5. Stamped.