These are my most specially-embellished ones...
Did you notice the black ones on the right? They are white pearl set in black of various materials, or vice versa. To the left of them are pearls set in materials of other shades -- I especially like the "Rolo" sized one!
More colorful varieties
These may just be my favorite: pearls in different shapes, all carved.
Most of these buttons I picked out of the many button tins I've purchased over the years. Some of them I bought from estate sales. A few of them I purchased from button shows I've attended.
Do you love shell buttons as much as I do?