Fluorescent Mineral Database

Opal - Peacock Mine, Virgin Valley, Nevada

Contributed by: FMS Admin
Date: May 25th, 2026
Locality: Royal Peacock Group Mines, Virgin Valley, Humboldt County, Nevada, USA (See on Mindat)
Size: 3 x 4 inches

Description:
Here is an opal from the Peacock Mine in the Virgin Valley of Nevada. Though opal typically only glows green, the mineral is great for providing uniquely sinuous specimens.

Originally posted by Fire Viper on Nature's Rainbows in 2016.

Fluorescence under shortwave UV light.
Fluorescence under shortwave UV light.

Summary of luminescence responses:

Opal-AN (Mindat) (RRUFF)

  • Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Green