Fluorescent Mineral Database

A new secret project! Trying to create a nice Fluorescent Mineral Database (FMDB), which would be searchable by mineral, locality, and luminescence properties. Also making it easy for people to contribute with their own specimens!

Quartz Owl – Italy

Contributed by: FMS Admin
Date: Mar 8th, 2026
Locality: La Sassa, Montecatini Val di Cecina, Pisa Province, Tuscany, Italy (See on Mindat)

Description:
Concentric rings in spheres of acicular quartz.

Photo under combined LW and MW-UV (both fluorescence photos) and under white light.

Locality: La Sassa, Montecatini Val di Cecina, Pisa Province, Tuscany, Italy

Source: Fluorescent Minerals Workgroup MKA : http://fluo.mineralogie.be/

Originally posted by Axel Emmermann on Nature's Rainbows.

Fluorescence under longwave and midwave UV light.
Fluorescence under longwave and midwave UV light.
Fluorescence under longwave and midwave UV light.
Fluorescence under longwave and midwave UV light.
Normal light.
Normal light.
Fluorescence under longwave and midwave UV light.
Fluorescence under longwave and midwave UV light.

Summary of luminescence responses:

Quartz (Mindat) (RRUFF)

  • Fluorescence under Midwave (305nm LED) UV light: Yellow
  • Fluorescence under Longwave (365nm LED) UV light: Yellow

FMDB Home Page
Submit a new specimen!
My Collection