Caged Tumbled Gemstones.       
These are large Tumble stones, in a cage with a faux suede cord.   Tumbled stones are small, rounded formations crafted by tumbling in a special machine. This process gives them smooth edges and a glossy sheen, while enhancing the natural colors and attributes of the stones.  Stones with a Mohs hardness of 7 or higher are ideal for tumbling, as harder stones can withstand the process without chipping or wearing away.  The resulting polished rocks, also known as "tumbled gems," "polished stones," and "baroque gems," are highly sought-after for their beauty, and are used in jewelry, crafts, awards, and souvenirs.