Thursday, September 29, 2011

Rock Review: Mustard Jasper

This week’s rock review features Mustard Jasper! The name jasper is derived from old French word “jaspre” for spotted stone.
Geology Buzz
Mustard Jasper is somewhat uncommon as it is currently mined only in Indonesia from the top of an active volcano, making it a special find! It often is black or gray on the outer layers progressing to a rich mustard yellow on its inner layers. Jasper is formed from Silica and volcanic ash that are deposited and consolidated in the presence of heat and water over time. Patterns are created as sediments are layered and then compressed.
All Jaspers are a form of Chalcedony. Jasper is between a 6.5-7 on Moh’s scale of hardness. It is opaque and able to take a high polish making it a good choice for cabochon style jewelry.
Fun Facts
Jaspers are one of the birthstones listed for the sign star sign Virgo. It is also the Mystical birthstone for those born in the month of October.
Yellow Jaspers are thought to be associated with balancing and strengthening ones social standing. They also are used to give protection during travel and as a shield from negativity.Ancient European cultures used Jasper ceremonially to conjure rain. Legends say that Jasper drives away evil spirits and protects against snake and spider bites. Since Halloween is just around the corner, it might be just the right time to add jasper to your wardrobe!

Mustard Jasper Saturn Bracelet from Layne Designs, available for purchase!

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