Wednesday, December 08, 2010

Tuesday, December 07, 2010

Orange Calcite


Orange calcite from Arizona that turns orange when exposed to ultraviolet light (254 nm).

Monday, December 06, 2010

Fluorescent Green Fluorite

Green fluorite from England that turns purple when exposed to ultraviolet light (254 nm).

Sunday, December 05, 2010

Fluorescent Blue Calcite in UV

Calcite from Mexico that turns blue when exposed to shortwave ultraviolet light (254 nm)