When the gold mine is available for purchase it is hard to find because it is buried at the end under decorations, yes deco! Who would have thought to look under deco for a gold mine? Not me! I found out about it because I keep an eye on the Sales and Special Offers thread and some very sharp eagle eyed person posted about it. I missed out that time because I was too slow and it was only offered for a few hours. Then I was clever enough to hoard gems and wait for Black Friday hoping it would be released again. luckily it was, but I had to be patient for months. I'm sure it will be released again, just be patient, and check the Sales and Special Offers thread, and keep an eye on the length of the deco section in the market. When the length of the deco section increases, something different has been added to it.