This is a 925 sterling silver open heart pendant with an asymmetrical swirling design on a thin chain

925: This is the international hallmark for sterling silver. It guarantees that the piece is made of 92.5% pure silver, with the remaining 7.5% consisting of other metals (typically copper) added to give the piece strength and durability. 

Price Range: $15.00 to $35.00. Buyers on these platforms are paying a premium for the design and wearability rather than just the weight