I dumped out one of the mason jars filled with seaglass in my personal collection.  Most of it is the common colors of clear and brown but notice the blue ceramic piece.  I like to think it came from a pretty vase or teacup on an exclusive passenger ship from days gone by.
 
Each vibrant card features a glossy 4x6 original photograph on 5x7 heavyweight white cardstock. It includes a white fitted envelope and is packaged in clear cellophane.