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Blue Sapphire Gemstone Overview Common Inclusions Found in Blue Sapphire Gemstone Blue sapphires often contain various inclusions such as rutile needles (silk), fingerprint inclusions, feather inclusions, and mineral inclusions like zircon or apatite. These inclusions can affect the stone's appearance and value . Possible Colors of Blue Sapphire Gemstone Blue sapphires range from light pastel blue to deep, intense royal blue. The...