Lab-grown gemstones are created in the laboratory. Although they are not mined from miles underground like natural gemstones, both natural and lab-grown gemstones have the same chemical, physical and optical properties. For this reason, lab-grown gemstones are considered to be genuine gemstones. Please remember that lab-grown gemstones are not synthetic gemstones. Synthetic gemstones have a similar appearance to natural gemstones but are made of a completely different material.