IUD necklace???? Yes I'm afraid so! These will certainly be a great conversation starter or ender but a very beautiful piece. The individual "charms" are just over one inch each. When I am at my shows so many people ask if they're signs of the Zodiac to which I usually reply, "no please look a little closer"! 
Perfect for your favorite Gynocologist or fertility expert or health class teacher. The sterling chain is approx 28" in length.