How Opal’s Play-of-Color Works
Before explaining how opal’s play-of-color works, I’ll need to review a few definitions you may not have encountered since school. […]
Before explaining how opal’s play-of-color works, I’ll need to review a few definitions you may not have encountered since school. […]
Rose Quartz There are three types of pink-colored quartz. The first and most common is rose quartz. Rose quartz forms […]
This is a presentation I gave to the Ozark Mountain Gem & Mineral Society on 25 April 2022. Please click […]
I gave a pared-down version of this presentation on the Petoskey Stone, Michigan’s state stone, to the Ozark Mountain Gem […]