July 2012

Only huge stars generate the heat and pressure necessary to create the heavy elements, including gold. This 8.4-cm-high gold on quartz specimen is from the Colorado Quartz mine in Mariposa County, California. (Jeff Scovil photo/Bill Larson collection)







The Celestial Origins of Gold
This earthly treasure was born in the stars
by Bob Jones

Brazil’s Cruzeiro Mine
It’s the world’s greatest tourmaline mine
by Bob Farrar

Sluice Box Shootout
Which one yields more gold?
by Marc Davis

Rock & Gem Kids
Halite, fossil word search, and a quiz

Color in Minerals
Part I: It gives collector specimens their appeal
by Bob Jones

Field Trip:
Ruby Mountain Revisited
A Colorado collecting site changes—and survives
by Steve Voynick

Field Trip:
A Big Snowy Mountain Adventure
Fossil collecting in Montana’s Russell Country
by Kenneth H. Rohn


Picks & Pans
Museum exhibits, book reviews, hobby news

Lapidary of the Month
Gemstone Knife
by Daniel R. Kelly

Show Dates
Mark your calendar!

Shop Talk
Display Options
by William A. Kappele

Rock Science
A Look at Silicon
by Steve Voynick

Off the Dop
Keeping Up
by Jim Perkins

Many Facets
DJG Kite
by David Groncki

On the Rocks
The Health of the Hobby
by Bob Jones

Field Notes
Reader letters

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