Sapphire

While sapphires are best known for being blue, like several other gemstones, they come in a variety of colours, including green, pink and yellow. Green stones very rarely reach full saturation of colours, but sapphires do, and are amongst the world’s most durable gemstones. This is why sapphires, both blue and green, are often used in jewellery that’s prone to being bumped, such as rings.