Updated as of June 2026
Blue Topaz vs Zircon
| Blue Topaz | Zircon | |
|---|---|---|
| Price / carat | $10 to $150 | $20 to $250 |
| Hardness (Mohs) | 8 | 7.5 |
| Color | Blue, Sky blue, Deep blue | Blue, Colorless, Yellow, Brown, Red |
| Treatment | Irradiation and heat (nearly all stones) | Heat treatment (most blue zircon) |
The bottom line
Blue Topaz and Zircon both make beautiful jewelry. Choose by the look you want first, then weigh hardness against how hard you will wear the piece, and let price settle close calls. Read the full guides for Blue Topaz and Zircon.
Frequently asked questions
Is Blue Topaz or Zircon more durable?
Blue Topaz is harder (Mohs 8 vs 7.5), so it resists scratches better.
Which is cheaper, Blue Topaz or Zircon?
Blue Topaz runs about $10 to $150 per carat and Zircon about $20 to $250 per carat, so Blue Topaz is usually the more affordable choice.
Which should I choose?
Pick Blue Topaz if you want blue tones and Zircon if you prefer blue. Match the stone hardness to how you will wear it and let budget break the tie.