GEMZONE - Stunning Ammolite Fancy Cab - 15.24CTS!

 Ammolite is a rare and valuable opal-like organic gemstone found primarily along the eastern slopes of the Rocky Mountains of the United States and Canada. It is made of the fossilized shells of ammonites, which in turn are composed primarily of aragonite, the same mineral that makes up nacreous pearls. It is one of the three biogenic gemstones, the other two being amber and pearl.

An iridescent opal-like play of color is shown in fine specimens, mostly in shades of green and red; all the spectral colors are possible, however. The iridescence is due to the microstructure of the aragonite: unlike most other gems, whose colors come from light refraction, the iridescent color of ammolite comes from interference with the light that rebounds from stacked layers of thin platelets that make up the aragonite. The thicker the layers, the more reds and greens are produced; the thinner the layers, the more blues and violets predominate.

ACTUAL IMAGES - ENLARGED TO SHOW DETAILS

	Natural Ammolite
	15.24cts
	1 Piece
	23.26mm x 15.72mm
	Fancy Cab
	Opaque
	None
	Canada