Ametrine 18x28mm Oval - 15-16 Inch Rounds until the 17th century Crystal

until the 17th century Crystal Quartz was believed to be permanently frozen water

its coloring is the result of the chemical reaction that occurs when copper is introduced to water

Moss Agate is a variety of Chalcedony

while the amount of Iron in the stone varies its shade of purple

Kambaba Jasper is a sedimentary stone comprised of microcrystalline Quartz interlaced with Stromatolites — ancient fossilized colonies of primeval microorganisms

Ametrine 18x28mm Oval - 15-16 Inch Rounds until the 17th century CrystalAmetrine is quartz that occurs in bands of purple and yellow. As the name suggests, it is a combination of Amethyst and Citrine. The different colored zones in the stone result from different oxidation states of iron, due to exposure to different temperatures during its formation. It is believed that Ametrine was first introduced to Europe by a conquistadors gift from Bolivia to the Spanish Queen.