Rainbow calsilica stone boasting striking blue colour and wonderfully unique markings. This curious man-made material was originally claimed to be a natural rock from Chihuahua in Mexico and was first introduced to the world famous Tucson rock and mineral show in 2002. After the initial excitement of this new find died down, a small group of experts started digging for information to establish whether it really was natural or as they suspected, man-made.
Due to the presence of some natural minerals including hematite, celestite and calcite it wasn't immediately obvious that it wasn't completely natural but further tests soon revealed that rainbow calsilica was indeed an imposter. It was a daring and audacious idea to try and pass a man-made stone off as a natural material at the world's largest rock and mineral fair and for a while the people behind rainbow calsilica pulled it off. In the months after first being shown its popularity spread around the world and the stone was in high demand but its success ultimately caused its downfall.