Last week, my daughter buy a pair of progressive glasses for me from the online prescription glasses store. She told me she choosed the pure titanium eyeglasses frame for me due to I am allergic to normal metal eyeglasses frames. Do you know how to confirm my eyeglasses frame is made of 100% titanium when I receive it? Thanks for your help.

Below points for your reference:
1. The frame should show no signs of discoloration or corrosion.
2. Check the weight, Titanium eyeglasses frames are much lighter than other metal frames.