The assigned order is rather transient as also slightly less translucent rubies and sapphire gemstones are granted among all the semi-precious stones, while tourmaline, in case it is very bright and attractive, is viewed as precious and highly valuable stone (it is normally classified as a semi-precious gemstone). When it comes to the comparison of gemstones then the cost of precious gemstones is always higher than the semi-precious gemstone.
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