On the one hand, it seems like a pretty name. On the other hand, it sounds a bit strange and corny as a name. This would be a good name for a cat or something, but I'm not so sure about a person.
I once had an imaginary friend with this name, nyaha! I like this name, because it's one of my favorite gems and colors. But now it reminds me a little of "Starfire", which is the lame name someone I know loves to go by online. :P But it's still precious all the same!
Some of the comments above me say that Sapphire is a corny name, but I think it's cute. I have a friend that has an older sister named Sapphire who is in her 20's, and I can so picture that. I can't picture someone named Madison or something like that in their 20's, but I could so picture a Sapphire.
The name Sapphire is loaded with racist overtones, which is why the author Romona Lofton uses Sapphire as her pseudonym. The cultural association of Sapphire with the image of a "belligerent black woman", goes back to the 1920s-1950s radio/television series Amos 'n' Andy. In it's time, Amos 'n' Andy was extremely popular and unfortunately it popularized racial caricatures of blacks. The character of Sapphire was a "domineering, aggressive, and emasculating shrew" and that characterization became popularly associated with the name Sapphire.
I think you're somewhat mistaken to say that the name Sapphire is "loaded with racist overtones". Perhaps in the USA, but in the UK, and, I expect, in most of the world it has no racist or stereotypical connotations whatsoever. My only association with this name is that of the blue jewel. The association with the TV/radio programme you cited isn't universal; I'd never heard of it until now, and I like most people in the world will probably never come across it.
-- Anonymous User 9/26/2012
Blue is one of my favorite colors! (And yes, being a person who loves to study gemstones, knows that they're not only blue. But everyone thinks of the dark blue color.) Although a lot of people (including me) have trouble spelling Sapphire, so in this instance I would spell it Saphire. Saphira is cool too. I would definitely use this!