The gems are hidden in a layer of gravel, covered by vegetation. Crystal, agate，宝石，玛瑙，水晶

gems, agate, crystal, sea glass, ore, gold珍珠，开蚌，珍珠蚌 pearl The gems are hidden in a layer of gravel, covered by vegetation. Crystal, agate，宝石，玛瑙，水晶