A Katela Stone is another name for natural Amethyst used as a substitute for blue sapphire(neelam). As per Vedic astrology, both neelam and katela stone benefits in improving the sade satti phase, protecting from evil energy, and bringing positivity to life. The katela stone price ranges between INR 3000-10000 per carat depending on factors like cut, color, clarity, and origin, besides the weight.