4.51 ct. Natural Star Ruby gemstone with Asterism

Buy now online this incredible star ruby loose gemstone, a rare stone from the corundum mineral family, included inthe group of four rpecious stones like: diamond, emerald, sapphire. This stone come from the ground of  Madagascar where it was genuine earth mined and shaped into a well polished and well calibrated oval cabochon cut. This stone is opaque but display a nice pinkish red color hue with good saturation and medium tone. It also present a well defined dancing star on the surface of the stone, a rare optical effect called asterism caused by perpendicular inclusions of rutile. This african ruby weight over four carat, comes with big size and it will be perfect to be set into ring or pendant. This stone was treated by heat and diffusion to enhance color and asterism effect. Ruby is considered a very durable gemstone with an hardness of 9 on the Mohs scale.