Like the title says, these are well made and sturdy. So far none of the gems have fallen out, but the posts are longer than any other post I've had (by about .2cm).  Other reviews mention the length too.
These work perfectly on the nostril piercings I have further up my nose but not in the lowest one because the post shows on the inside.

So, if your nostril is pierced higher up, or you are needing a longer post, these are perfect!