Emerald tear drop cut "The foundations of the city walls were decorated with every kind of precious stone. The first foundation was jasper, the second sapphire, the third agate, the fourth emerald," ~ Revelation 21:19
Black Opal is Australia’s national gemstone, and black opal is the rarest and most valuable of its kind, at times selling at prices that rival the best diamonds. The stone must have a rich, black background, but base colors come in all shades of gray, which is why opinions vary on what is a “true” black opal. Found in the Lightning Ridge area in northwestern New South Wales, black opals are natural, solid stones that absorb scattered white light, giving it brilliant spectral c
Color Change Garnet is one of the most rare, interesting, and phenomenal of all gems and the only example of blue garnet. In the past, gemological literature referred to garnet as occurring in every color but blue, but this is clearly not the case anymore and some Madagascan and Tanzanian color change garnets are indeed blue under the right light conditions.