High-purity synthetic fluorite in pellet form next to a tape measure for scale. Iwatani Corp.
Fluorite (not to be confused with fluorine) has become an interesting player in the optics market. The mineral form of calcium fluoride, ultra-high-grade fluorite is used to create low-dispersion optical elements that improve image quality by reducing the chromatic aberration and color fringing that plague traditional, glass-based optics. Fluorite lenses also enjoy a roughly 10% weight advantage compared to their traditional…
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