1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Does anyone know a crystal with refractive index of water?

  1. Dec 9, 2009 #1
    When I was a little kid, I met a gemologist who showed me a cool trick with a ring he'd bought for his wife. When he submerged it in water, the crystal disappeared!

    As I now know, this crystal had an index of refraction of 1.33.

    Anyone know what this crystal is and/or how I can get my hands on one?
     
  2. jcsd
  3. Dec 9, 2009 #2
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook