Geode! Big with violet crytals

[nagant]

Geode? At least a foot tall, in a friends yard. He wanted to know more about it and if it's worth anything. I told him to get it out of the dirt and put it inside.

 

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[Kray Gelder]

These sliced amethyst geodes are very available, such as at the Tucson Gem Show, pictured here. You are right though, get it out of the sun, amethyst will fade in sunlight.

 

[smokeythecat]

They ave been popular for a number of years. They are found, if memory serves in Uruguay. Some are HUGE.

 

[nagant]

You guy's are great! thanks, didn't have a clue where to start to get him answers.

 

[galenrog]

The poor thing has been in the sun way too long. Amethyst should be a brilliant bright violet. My condolences to your friend, but I believe the value is severely diminished due to exposure.

Time for more coffee.

 

[Eu_citzen]

These sliced amethyst geodes are very available, such as atView attachment 1599434 the Tucson Gem Show, pictured here. You are right though, get it out of the sun, amethyst will fade in sunlight.

What should be added is that not all amethyst will fade.

 

[Bajahunter]

Nice amethyst. You geode is from the US. Very typical of amethyst crystals found in Creede CO. The geodes Kray showed are from Mexico or South America.
Some Creede amethyst has a very deep purple color at the base but almost all turn to clear at the tip.
Value is in the tens of dollars. Drive to Boulder or San Fran and you might double your money.
Tell your friend to keep it and put it on display.

 

[Kray Gelder]

Thank you EU Citizen and Bajahunter for clarifications. My reply was admittedly incomplete. I recalled seeing these at gem shows, and thought it would help him out.