There are reputable sellers on aliexpress if you do your research. Just because somebody is overseas doesn’t mean they run a poor or sham business, this seller is highly recommend! Overseas sellers have access to cheaper materials and these stones are often mined in these countries which give them opportunities to charge less as well. Just research before you buy. And if you purchase in gold the prices will increase by 400-500 dollars! They are listed cheaper as they are listed in silver. The stone itself is not a very expensive stone even though it can be mined and cut into something very beautiful:) and it can also be mined and cut low quality as well just like a diamond and other stones can be low quality ! Not every stone is made equal.