这儿是美国最大颗宝石的发现地，交了门票就可以自己来寻宝，出发吧！
Thomas Stolartz says the largest diamond ever found in North America was unearthed here. "Over my right shoulder is the approximate location of where the ‘Uncle Sam’ diamond was found back in 1924." Other famous finds include the 15.33-carat "Star of Arkansas," and the 16.37-carat "Amarillo Starli…