The blue color of the blue sapphire is due to the presence of titanium and iron, the red in rubies is due to the presence of chromium. The more slowly the magma cools, the larger the sapphire will be.Īlthough the blue sapphire may be the most prized, its color is actually a result of its impurities. If no trace minerals seep in, the sapphire will be completely pure, or white. As the crystal lattice of the sapphire develops, trace minerals can sink in, transforming the color of the stones. Sapphires are usually found in igneous rock which has a low amount of silica and a high amount of aluminum. Corundum is a mineral that takes on its color as it forms. Sapphires are made from the corundum mineral and take millions of years to form. ![]() Yet, sapphires come in many colors the ruby is, in fact, the red version of the corundum mineral the white, or colorless, is the most popularly used in wedding and engagement rings. In fact, the rulers of ancient Persia believed that the reflection from sapphires was responsible for giving the sky its full color. The name sapphire is derived from the Greek word sapheiros and the Latin word saphirus, both meaning “blue.” When most think of a sapphire, they think of the color blue. ![]()
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