Copal vs Ammolite
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Copal
Copal is a relatively young tree resin that has not undergone the full geological transformation associated with true amber. Much copal is classified as sub-fossil resin and is less than one million years old, although its age varies by deposit. It is often sold as an amber-like material, but it is generally softer and more soluble in organic solvents such as acetone, differences that help disting...
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Ammolite
Ammolite is a rare, iridescent organic gemstone formed from the fossilized shells of Cretaceous-period ammonites. It is mined almost exclusively in the Bearpaw Formation in Alberta, Canada, and was officially recognized as a gemstone by the World Jewellery Confederation in 1981. The gemstone displays a wide spectrum of colors, often compared to opal, and is highly sought after by collectors and je...
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