Quartz with a fiery heartLooking like a doorway into another dimension, this wonderful crystal of qu
Quartz with a fiery heartLooking like a doorway into another dimension, this wonderful crystal of quartz held a secret within. The dark orange brown agate in the centre is surrounded by haloes of iron oxide minerals, probably haematite (see http://tinyurl.com/nngtpnh), and displays the iridescent 3d optical effect known as fire agate, discussed previously at http://tinyurl.com/kxfh644.LozImage credit: Fender Minerals -- source link
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