|How to grab a rainbow A full carat of genuine amethyst, citrine, peridot and blue topaz capture all the colors of the rainbow. The glory of a rainbow is really just an optical illusion, and my friend the physicist wanted to explain the science to me. Apparently light changes both speed and direction when it travels from one medium to another, so when sunlight passes through air and then water droplets… and he goes on and on. Apparently it’s quite complicated. My physicist friend told me grabbing a piece of a rainbow is impossible. “;Then how do you explain this?”; I asked, showing him the rainbow of jewels I would later present to my wife. He was struck speechless! For in my hand, a gorgeous pastel spectrum of gemstones sparkled and winked at him. Lavender amethyst, sunny citrine, green peridot and soft blue topaz forming undeniable rainbow glory. When he finally found his voice, all he said was, “;Tell me where you found this rainbow.”; Lucky for us both, Stauer has it right here. And, for an amazing price. Now, don’t get me started on what my economist friend said… Add the matching 18in. Sterling Silver Chain for ONLY $59!