Blue Stones

Semi-precious and precious stones of the blue color are rarely found in nature, that’s why they’re highly valued in the jewelry world.  As natural blue minerals are very rare, the desired heavenly hue is obtained by means of chemical and thermal processing.  Gemstones retain their name, but their properties somewhat

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Sky-Blue Stones

Precious, semi-precious and fine stones of blue color have been utilized by humanity since ancient times.  The most common minerals with this coloration are transparent, however, blue pale opaque gemstones are widespread too. Precious sky-blue stones are represented by sapphires and aquamarines.  As for more affordable gemstones, we can enumerate

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