A yin yang medallion where the two interlocking forms are rendered in malachite-simulating green resin and onyx-simulating black resin in 14K gold over sterling silver on a 16-inch chain with lobster claw clasp and extender. The yin yang motif carries philosophical weight that gives this piece meaning beyond its material composition - the symbol of complementary opposites reads as intentional rather than decorative for the wearer who connects with its symbolism. The malachite-simulant green against the onyx-simulant black is a high-contrast, nature-adjacent color pairing that has genuine visual presence at medallion scale.