Tourmaline is a name applied to a family of related minerals with widely varying properties. Tourmalines make very popular jewelry stones and come in an amazing range of colors, including multi-color zones. Pink tourmaline – the modern October birthstone – is a particularly popular color.
Most colors are fairly common, but pure blue, red, orange, yellow, and purple stones are rare. Such stones usually command higher prices. Color-change tourmalines are also exceptionally rare. Neon-blue paraíba tourmalines, raspberry-red rubellites, and emerald-green chrome tourmalines are especially prized.
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