Some of the rocks, which are very rare on Earth, are being sold from US$11,000 to $22,500 per ounce, which is about ten times more than the cost of gold.
其中一些岩石在地球上非常稀有，售价在每盎司 11,000 美元到 22,500 美元之间，比黄金的价格高出约十倍。