in between the suits of armour , and on each side of the path , were shelves covered with precious things - necklaces and arm rings and finger rings and golden bowls and dishes and long tusks of ivory , brooches and coronets and chains of gold , and heaps of unset stones lying piled anyhow as if they were marbles or potatoes - diamonds , rubies , carbuncles , emeralds , topazes , and amethysts .