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Lab-grown sapphires are man-made gemstones that are grown in a laboratory under controlled conditions. The chemical, physical and optical properties are identical to their natural counterpart, making sapphires created in a lab, real gemstones. Artificially created processes mean they can have little to no inclusions and often present as completely clean to the naked eye. They can also differ in colour and saturation. Lab-grown gemstones are eco-friendly and humane as they are unmined.