Natural Gemstones - Direct Source. Buying office: Arusha, Tanzania; Sales and Shipping: London, United Kingdom. All items on the website are in our UK office, ready to ship to you. Ships fast; stocks move quickly, so buy now. All natural, untreated, unheated unless otherwise stated. The best way to do it is just add to cart what you need as you go along; you may not find it again due to so much that we add on site. Pics and vids are taken from a phone with no enhancement and are heavily zoomed in, showing inclusions that may not be visible to the naked eye. What you see is exactly what we see here.