Our “Once in a Blue Moon” necklace features a rare, iridescent bismuth crystal grown by hand and crafted into a truly one-of-a-kind piece of jewelry. Our casually elegant blue bismuth moon pendant is perfect for everyday wear. With a slender, crescent shape and natural metallic shimmer, each crystal forms as molten bismuth cools in our studio. This slow cooling process creates tiny geometric steps and shifting rainbow tones — meaning no two moons will ever look exactly alike. Yours may reflect soft light blues, hints of violet or pink, or deeper blue shades, depending on how your crystal chose its colors as it formed. The pendant is suspended from a sterling silver bail and comes with your choice of chain: – Silver-plated snake chain (included) – Diamond-cut sterling silver rope chain (upgrade) Light catches this crystal beautifully, giving it a prism-like glow that changes with every angle. It's a celestial yet understated piece that works for everyday outfits or as a meaningful statement for a special occasion. Your necklace arrives in a black gift box tied with a bow — ready to give. If this is a gift, we offer unique celestial gift wrap (pictured in the last photo) and are always happy to include a personalized message. Whether you're treating someone you love or choosing a moment of magic for yourself, this necklace is a reminder that some people, and some moments, only come once in a blue moon.