Updated as of June 2026
Blue Topaz
A popular affordable blue gem produced from treated topaz, associated with calm, clear communication, and serenity.
Price range$10 to $150/ct
Hardness (Mohs)8
ColorsBlue, Sky blue, Deep blue
BirthstoneDecember
AltGems Score How we score
6.8/10
Blue Topaz pros and cons
Pros
- Excellent durability (Mohs 8) for everyday wear
- Strong value for the look
- A recognized birthstone (December)
Cons
- Can chip or cleave from a hard knock
- Commonly treated (irradiation and heat (nearly all stones))
Blue Topaz is ideal for earrings, pendants, and occasional-wear rings, and works in everyday rings with a protective setting.
Explore Blue Topaz
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 bestBlue Topaz jewelry
Blue Topaz ringsBlue Topaz engagement ringsBlue Topaz necklacesBlue Topaz pendantsBlue Topaz earringsBlue Topaz bracelets
Blue Topaz by cut
Round Blue TopazOval Blue TopazEmerald Cut Blue TopazCushion Blue TopazPrincess Blue TopazPear Blue TopazAll cuts
Blue Topaz ring styles
Blue Topaz solitaire ringBlue Topaz halo ringBlue Topaz three stone ringBlue Topaz hidden halo ringBlue Topaz vintage and antique ringBlue Topaz bezel ringAll styles
Blue Topaz by metal
Blue Topaz in yellow goldBlue Topaz in white goldBlue Topaz in rose goldBlue Topaz in platinumBlue Topaz in sterling silver
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. Hard but can cleave if struck. Clean with warm soapy water and a soft brush. Avoid ultrasonic cleaners and prolonged heat or sunlight.
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Where to buy Blue Topaz: 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 Blue Topaz?
A popular affordable blue gem produced from treated topaz, associated with calm, clear communication, and serenity. It rates 8 on the Mohs hardness scale and commonly appears in blue, sky blue, deep blue.
How much does Blue Topaz cost?
Blue Topaz typically runs about $10 to $150 per carat depending on color, clarity, cut, and origin. See our Blue Topaz price guide for detail.
Is Blue Topaz good for everyday jewelry?
Yes. At Mohs 8 it is durable enough for rings and daily wear with normal care.
What is the AltGems Score for Blue Topaz?
Blue Topaz earns an overall AltGems Score of 6.8 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 Blue Topaz?
Hard but can cleave if struck. Clean with warm soapy water and a soft brush. Avoid ultrasonic cleaners and prolonged heat or sunlight.