Best Blue Gemstones

From deep sapphire to soft aquamarine, here are the blue stones worth knowing.

1. Sapphire · Mohs 9 · $50 to $2,000/ct. Long linked to wisdom, loyalty, and nobility. Blue sapphire is a classic engagement-ring center stone and a…
2. Topaz · Mohs 8 · $10 to $400/ct. Associated with clarity, confidence, and communication. Blue topaz is a popular affordable blue gem.
3. Blue Topaz · Mohs 8 · $10 to $150/ct. A popular affordable blue gem produced from treated topaz, associated with calm, clear communication, and…
4. Aquamarine · Mohs 7.75 · $30 to $600/ct. Named for seawater and linked to calm, courage, and safe travel, once carried by sailors for protection.
5. Zircon · Mohs 7.5 · $20 to $250/ct. A natural gem with high brilliance, traditionally worn for wisdom, prosperity, and restful sleep. Not to be…
6. Euclase · Mohs 7.5 · $100 to $600/ct. A rare collector gem prized for its delicate blue to sea green hues. Its name comes from Greek words for…
7. Paraiba Tourmaline · Mohs 7.25 · $1,000 to $20,000/ct. A copper-bearing tourmaline famous for its electric neon blue-green glow, among the most prized colored gems.
8. Indicolite · Mohs 7.25 · $40 to $700/ct. A rare blue tourmaline tied to calm, honest communication, and clarity in crystal tradition.
9. Iolite · Mohs 7 · $15 to $150/ct. Once used by Viking navigators as a polarizing filter, iolite is linked to vision, intuition, and inner…
10. Dumortierite · Mohs 7 · $5 to $50/ct. A deep blue mineral often cut into cabochons or found as inclusions in quartz. In crystal lore it is tied to…
11. Blue Lace Agate · Mohs 7 · $3 to $40/ct. A gentle banded chalcedony with soft blue and white waves. Crystal traditions link it to calm, clear speech,…
12. Chalcedony · Mohs 6.75 · $3 to $60/ct. A soft-hued microcrystalline quartz traditionally associated with calm, goodwill, and gentle communication.
13. Tanzanite · Mohs 6.5 · $100 to $1,200/ct. A rare gem found only near Mount Kilimanjaro, associated with transformation and insight.
14. Benitoite · Mohs 6.5 · $800 to $4,000/ct. A rare blue gem found in gem quality only in California, where it is the official state gem. Famed for…
15. Kyanite · Mohs 6 · $5 to $120/ct. A bladed blue silicate associated with alignment, communication, and clear thinking in crystal tradition.
16. Sodalite · Mohs 5.75 · $2 to $40/ct. A royal blue stone tied to logic, insight, and calm communication in crystal tradition.

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