Love these low profile ball ends. The purple opal is a blue color that shines pink in the light. It's a really pretty effect.

I just got this in today, it's lovely and the perfect size!! The rose gold is very complimenting! I did request a more rosy tone and they didn't miss :)

Really nice and you can still see the opal sheen. Lovely.

These are so beautiful and go with the other ones I have. They don't sell the ones I wear on my others anymore so these were perfect.

Absolutely beautiful and high quality! Unfortunately I will return it because I thought 4 mm would be bigger (I'm use to larger designs). This is perfect for something discreet but flashy. I really love the purple opal!

I started with the 2.5 mm white opal. When i got it, it was way smaller than I expected. After I read one of the reviews I realized I needed to order bigger. They were great with the return and I got a 4mm white opal just to be safe. It's the first time I ever changed the ends and it was a little hard to do, but that could be because I never did before. I think 3mm would have been better for me. 4mm is a little bigger than I wanted, but it's all about trial and error. From far away I don't see the change in color like I expected. It just looks white. Gonna try the purple next at 3mm.

This isn't as flashy as I originally thought it would be because of the size, but I almost like that about it. I'm knocking a star off, though, because compared to my other 3mm ends (both theaded and threadless) this one actually looks smaller. Not as small as a 2.5mm, but noticably smaller. I especially feel the difference in my vertical labret from my previous 3mm end I had in. Otherwise, this sits well and feels secure. It looks pretty and suits my other jewelry well. I just don't know about this sizing. EDIT: I made a mistake in talking about the size of this end! My previous end is 3mm without the setting and overall is 3.6mm in diameter. THIS end is 3mm in its entirety. I just wanted to clarify because I was holding something against this piece that wasn't fair!