Learn about how mollusks create these shiny gems and how that biological process could change as Earth’s waters warm Abigail Eisenstadt Smooth pearls in the shape of orbs and ovals are usually created ...

If you like the technique in video 1047, but don't like the rose pattern, or want to work with small stones, this video is ...

Ancient Persians believed the sky was blue because it reflected a massive sapphire beneath the Earth, giving the stone cosmic symbolism. Kings, priests, and rulers wore sapphires to signal wisdom, ...