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October Birthstones:
Tourmaline-This gemstone occurs in many colors, including the remarkable intense violet-to-blue gems particular to Paraíba, Brazil, and similar blues from Africa. A favorite of mineral collectors. Opal-Opal’s microscopic arrays of stacked silica spheres diffract light into a blaze of flashing colors. An opal’s color range and pattern help determine its value. Source: Gemological Institute of America.
Did You Know?
Pumice, a type of igneous rock formed by explosive volcanic eruptions, is the only rock that floats on water.