Sistema series The Sistema series is the first series in the "four parts". As a way of creating, it expresses the core principle of P/4, namely modularity. "Main body" and "insert" are independent parts connected together by pins. This leaves unlimited possibilities for the iteration of material and shape combinations. Natural variation This item is made of natural ingredients and will be different from the photos you see. Each piece is unique Rough gem We use multi-faceted grade rough gemstones, which means that the traditional intent of this rough material is to cut multi-faceted gems. This ensures the highest quality materials while maintaining our aversion to classic jewelry specifications. Color: DA: Dirty pound. Pure silver, immersed in acid to form a soft surface. The results will never be exactly the same, and this nuance/difference should be regarded as a unique feature of the product. DRUS: Dirty ruby slab. The ruby harvested from the flat plate is rough and the excavation quality is good. Not polished. Material: crystal ruby sterling silver Family: Sistema Series: Series 13 Tags: Ground