Revelation 21: 19 – 20: And the foundations of the wall of the city were garnished with all manner of precious stones. The first foundation was jasper; the second, sapphire; the third, a chalcedony; the fourth, an emerald; The fifth, sardonyx; the sixth, sardius; the seventh, chrysolite; the eighth, beryl; the ninth, a topaz; the tenth, a chrysoprasus; the eleventh, a jacinth; the twelfth, an amethyst.
In our modern era of advanced scientific discovery, an amazing revelation surfaced when working with purer light. Natural light comes in all directions, but laser light runs in one direction. And then there is cross polarized light. A polarized filter allows a small amount of light to pass through, but when another filter is put at right angles to the first filter, then the filter becomes very fine so that only very straight light can pass through.
Very thinly cut slices of precious stones have been put under this purer light for microscopic examination to see what the effect would be. When this cross polarized light was shone through them, one of two entirely different things happened: (1) the anisotropic minerals were able to be penetrated by the pure light due to their inconsistent properties in all directions; (2) the isotropic minerals could not be penetrated by the pure light because their mineral properties blocked the light in every direction.
Some of these precious stones which are of anisotropic nature, when placed under this pure light, whatever their natural colours are, they will turn into all the colours of the rainbow and make the most fantastic patterns. Other precious stones which are of isotropic nature, when placed under this pure light, they lose all their colour and go black (such as the diamond and ruby for example). Each of the 12 stones named in Revelation 21 are anisotropic so that in pure light they are far more beautiful and create a most fantastic display of pattern and colour.