Purple Sea Urchin Shells for Sale measuring between approximately  1-3/4 inches and 2-1/8 inches in size.  Some will be dark purple and others will be pale purple.  These pretty purple urchins will have vertical lines of tiny knobs around the entire shell.   The patterns on the urchin shells will vary also. Purple sea urchins are used to display small air plants, as accent pieces on shell wreaths, shell mirrors and also displayed in glass bowls and baskets. These are real- not replicas.       No 2 will be identical.  There will be variation in coloring, patterns and shape.