Pearls originate from oceans and lakes from around the world. Pearls are organic gems that grow inside the tissue of a living saltwater or freshwater mollusk. Cultured pearls are a product of a technicians implanting a piece of mantle tissue or a mother-of-pearl shell bead into a mollusk. The mollusk covers the irritant with nacre, just like when producing a natural pearl. Pearls come in many colors, shapes and sizes. It is used for celebrating the 3rd wedding anniversary.

Alexandrite is the rare variety of chrysoberyl that changes color in different lighting. It is green/blue-green in daylight and red/purple in artificial incandescent light. It is named after Czar Alexander II and was discovered in 1830 in the Urals. A high-quality stone is one of the most expensive gemstones. It is used for celebrating 18th wedding anniversaries.

Moonstone is the best-known gem of the feldspar group of minerals. It is renowned for its white shimmer of light that appears to move across the gemstone, similar to moonlight. It is a 6–6.5 on the Mohs scale of hardness. They are colorless with a pale, white, or blue sheen.