Strengite is a rare iron phosphate mineral with the formula: FePO₄ · (or sometimes containing some Al, but not to be confused with Variscite, and so can also be written with the formula: (Fe,Al)PO₄ · )
Pietersite (Tempest Stone): a fairly recently discovered stone that is said to hold "the keys to the kingdom of heaven;" facilitates astral projection and spiritual journeying; stimulates intuition and the third eye
Black Opal is Australia’s national gemstone. 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 colors.
"Light of the Desert", the world's largest faceted Cerussite gem carats), Royal Ontario Museum. Cerussite is one of the only gems with adamantine (diamond-like) luster. Very fragile. ITS THE ARKENSTONE!