August babies: your birthstone is 💚 PERIDOT 💚 It might not be the best-known gemstone, but it’s plentiful within rocks in the Earth’s upper mantle. And that’s what matters ✨ Want to learn more about the world of rocks all around us? Why not pop into the National Museum of Scotland to visit our giant slice of peridotite. What a birthday treat 🎂 | National Museums Scotland