What does it mean if only one diamond glows under a blacklight?

QuestionsCategory: Ask The Diamond GuyWhat does it mean if only one diamond glows under a blacklight?
Dee Doan Staff asked 2 years ago

I have a 1/2 carat tw past present and future ring. While at a bar with my sister she noticed the middle stone of my ring glowed a very bright white/yellow color, but the other two diamonds did not. Is that normal?

1 Answers
Dee Doan Staff answered 2 years ago

Hi Melinda,
What you witnessed is called fluorescence or a diamonds reaction to UV light. Two out of every three diamonds fluoresce, but just because it did not fluoresce does not mean its fake. Fluorescence is not a reliable test for authenticity.
The Diamond Guy Helper

This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish.

A few steps for you to expect once you submit your form - We will first send you an email confirming that we’ve received your form, so keep an eye out for that.  We will then contact you within 24 hours via your preferred method of contact. We will work with you to setup a complimentary one-on-one consultation with your gemologist.