Girls' Necklace Gold Toned with Light Pink Gemstone

A gold toned necklace with a light pink, square-shaped gemstone charm. I am not sure if the gemstone is real. Closes with a lobster clasp. Can be worn for casual or formal occasions! I am not sure of the brand because this was handed down to me. I believe it is from the 00s. The chain measures about 16 inches total, and the gemstone measures about 0.25 inch by 0.25 inch.