The Rainbow is an eternal, mystical symbol that has captivated our hearts and minds from the beginning of recorded history. Symbolizing the eternal link between earth and the heavens with a Rainbow representing “an eternal promise”.
Fossils Trap Molecules
When this solution enters an underground cavity (sometimes left behind by a dinosaur fossil, a belemnite or another prehistoric marine animal), the H20 miraculously deposits the silicates as tiny spheres in a jelly-like water mass. In extremely rare cases the microscopic spheres are even and consistent in size and perfectly aligned.
Rainbow is suspended in the Gemstone
Other gems (such as Diamond) depends on man’s intervention ‘faceting’ the diamond to ‘split’ light into the scintillation of very limited colours and gems that reflect rainbows (such as Ammolite) depend on chemicals inside the material (as well as resins to stabilize them) to form the rainbow-like colours.
With Opal the occurrence of natural rainbows is due entirely to the uniformity of tiny spheres, each in the order of a tenth of a micron in diameter. The size and alignment of the spheres creates the varieties of pattern and ‘. Smaller spheres (less than about 150nm) bring out blues and violets from one end of the spectrum. Larger spheres (no larger than about 350nm) produce oranges and reds. These spheres are so small that this size difference translates to a difference between roughly 3 million “larger” spheres and 6.5 million “smaller” spheres lined up within the space of a millimeter. The more uniform the size of the spheres, the more intense, brilliant, and defined the color will be.