Updated as of June 2026
Dumortierite
A deep blue mineral often cut into cabochons or found as inclusions in quartz. In crystal lore it is tied to patience and clear focus.
Price range$5 to $50/ct
Hardness (Mohs)7
ColorsBlue, Violet blue, Denim blue
BirthstoneNone
AltGems Score How we score
5.8/10
Dumortierite pros and cons
Pros
- Good durability (Mohs 7) for most jewelry
- Strong value for the look
- Usually sold untreated
Cons
- Opaque, so it shows color rather than sparkle
- Quality varies widely, so compare before buying
Dumortierite is ideal for earrings, pendants, and occasional-wear rings, and works in everyday rings with a protective setting.
Explore Dumortierite
Meaning and properties
Symbolism, zodiac, chakraPrice and value
What it costs and whyBuying guide
How to choose and where to buyCare and cleaning
Keep it looking its bestDumortierite jewelry
Dumortierite ringsDumortierite engagement ringsDumortierite necklacesDumortierite pendantsDumortierite earringsDumortierite bracelets
Common buying mistakes
- Buying on carat weight alone instead of color and cut, which drive beauty more.
- Skipping treatment disclosure, which changes both value and care.
- Overpaying at one retailer without comparing the same color and carat elsewhere.
- Cleaning it the wrong way. Durable for a cabochon stone. Clean with warm soapy water and a soft brush. Avoid prolonged heat and harsh chemicals.
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Where to buy Dumortierite: for fine pieces, choose established jewelers with clear return policies and lab reports; for unique or budget pieces, vetted marketplace sellers work well. Always confirm treatment and the return window before buying. AltGems prices are general per-carat guides, so verify value with a certified gemologist or GIA report.
Frequently asked questions
What is Dumortierite?
A deep blue mineral often cut into cabochons or found as inclusions in quartz. In crystal lore it is tied to patience and clear focus. It rates 7 on the Mohs hardness scale and commonly appears in blue, violet blue, denim blue.
How much does Dumortierite cost?
Dumortierite typically runs about $5 to $50 per carat depending on color, clarity, cut, and origin. See our Dumortierite price guide for detail.
Is Dumortierite good for everyday jewelry?
It rates 7 on the Mohs scale, so it suits earrings, pendants, and occasional-wear rings better than daily rough use.
What is the AltGems Score for Dumortierite?
Dumortierite earns an overall AltGems Score of 5.8 out of 10, balancing durability, brilliance, value, rarity, and everyday wearability. See our methodology on the How We Score page.
How do I care for Dumortierite?
Durable for a cabochon stone. Clean with warm soapy water and a soft brush. Avoid prolonged heat and harsh chemicals.