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

Questions › Category: Ask The Diamond Guy › What 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

0 Vote Up Vote Down

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 it�s fake. Fluorescence is not a reliable test for authenticity.
The Diamond Guy Helper

Schedule/Request Appointment

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.

Toll Free: 1-800-275-4047
Local: 713-222-2728

4265 SAN FELIPE, STE 960
HOUSTON, TX 77027

Email: info@diamondcuttersintl.com

MON-FRI 9:00am - 5:00pm
SAT 9:00am - 12:00pm
SUN Closed

First Name

Last Name

Phone

Desired Date

Mon - Fri Availability

Saturday Availability

Reason for Appointment

How would you prefer to be contacted?

When is the best time to contact you?

Schedule/Request Appointment

Toll Free: 1-800-275-4047 Local: 713-222-2728

4265 SAN FELIPE, STE 960 HOUSTON, TX 77027

Email: info@diamondcuttersintl.com

MON-FRI 9:00am - 5:00pmSAT 9:00am - 12:00pmSUN Closed

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

Toll Free: 1-800-275-4047
Local: 713-222-2728

4265 SAN FELIPE, STE 960
HOUSTON, TX 77027

MON-FRI 9:00am - 5:00pm
SAT 9:00am - 12:00pm
SUN Closed