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Detailed description, properties, and locality information guide about the mineral rhodochrosite.
Spessartite garnet is ideochromatic, meaning that it is colored by a fundamental element in its composition. That element is manganese, which produces an orange color.
Detailed information and photos for over 100 gemstone varieties from around the world!
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Benitoite Screening and Mine trip information. There are 3 ways for the public to hunt for their own benitoite treasure. Benitoite Screening Yard
Conclusion Regarding trends in the colored gemstone market, prices are firm for most gems. The only exception is tanzanite. The supply of fine gems is declining and ...
Beautiful Bisbee Blue turquoise jewelry, antiques, western memorabilia, sterling silver jewelry and old indian pawn
Descriptions, properties and uses for 80 different minerals - Geology.
The following is for snail mail only: Write: NGC P. O. Box 42468 Tucson, AZ 85733 Call: 1-800-458-6453 or (520)-577-6222 ( ) I like the Gemstone Forecaster.