Sterling Silver 925 Pendant With Semiprecious Stones, Faceted Mystic Topaz  and Black Mother of Pearl.
Mystic Topaz is a natural, colorless topaz treated with a thin film deposition (usually titanium) to create a permanent, iridescent, rainbow-like appearance. It has a high Mohs hardness of 8, making it durable for daily wear, though its surface coating requires careful maintenance. It features a brilliant, shimmering play of colors and is popular for its vibrant, color-changing, and, often, Aurora Borealis-like effect. 
Black mother of pearl, often sourced from Tahitian oysters, is prized for its intense, iridescent dark luster and is believed to offer powerful protective, calming, and transformative energies. Associated with the ocean and the moon, it is used for emotional healing, enhancing intuition, attracting prosperity, and providing "motherly" protection.