A cabochon (/?kæb????n/, from Middle French caboche “head”) is a gemstone which has been shaped and polished as opposed to faceted. The resulting form is usually a convex (rounded) obverse with a flat reverse.
In respect to this, how can you tell if Jasper is real?
You will notice a grainy structure because red jasper is formed by tiny quartz crystals. Hold the stone up to a strong light or the sun. Red jasper is opaque, so you will not see any light shine through. If your stone is translucent, it is not red jasper.