Ammolite- is a rare gemstone formed from the fossilized shells of ammonite creatures, preserved for over 70 million years. Their vivid colors—ranging from fiery reds to deep greens and blues—come from mineralized aragonite layers within the fossil that look identical to the flash of opals.
Please visit this page to look up Ammolite and Aragonite crystal properties. https://healingmountaincrystals.com/pages/index
*Sizes are approximate.