Gems of the world ltd have one of the largest selection of tumbled crystals in the uk . Gems of the world ltd sell native american jewellery .Why not come and have a look at gems of the world ltd crystal shop to see our pair of 7ft amethyst cathedrals.gems of the world is located at the edge of the peak district derbyshire at carsington water Ashbourne.We look forward to see you at our crystal shop.All the best andrew Gems of the world ltd.