Blue gemstones cover every shade from pale sky to deep navy, and many species offer it. Favourites include blue sapphire, tanzanite, aquamarine, blue topaz, blue spinel, blue zircon and lapis lazuli.
How to choose a blue gemstone
- Pick your blue: sky, Swiss and London blue topaz show how wide the range can be.
- Match toughness to use: sapphire and spinel suit daily rings, while tanzanite and lapis do better in earrings and pendants.
- Watch for darkness: very dark blues can look almost black indoors.
- Compare look-alikes: aquamarine and blue topaz can look similar, so check the species.
- Compare on screen with care: photos can make blues look brighter, so look at a few listings side by side.
Shop blue sapphire (neelam) or tanzanite, or read sapphire versus other blue gems.