The spectroscope is made up of a set of prisms, which breaks up the natural white light into a continuous visible spectrum (red, orange, yellow, green, blue, indigo and violet). A discontinuous absorption spectrum is obtained when observing a gemstone under a spectroscope. Since each element has its own specific absorption wavelengths in the spectrum, we can identify gemstones based on their absorption of the visible spectrum, which give rise to unique colors and characteristics.