Is Black Onyx real or dyed?

Our black onyx is genuine natural stone, described honestly. Natural black onyx shows subtle variation in colour and pattern across a piece - a colour that looks too perfect or identical everywhere can indicate dyed or imitation stone.

Can Black Onyx go in water?

Yes, briefly - onyx is a quartz; note most black onyx is dyed, so avoid long soaks.

How hard is Black Onyx and is it good for everyday wear?

Black Onyx is around Mohs 7 (hard, durable). It is hard-wearing and suits daily bracelets and rings.

How do I care for Black Onyx?

Wipe with a soft cloth, store separately so harder stones do not scratch it, and follow the water guidance above. See our crystal care guides for more.

Black Onyx Crystals UK - Polished Black Stone

About Crystals Healing UK

Crystals Healing UK is your London, UK destination for handcrafted crystal jewellery and natural stone gifts, thoughtfully curated and gift ready. Shop bracelets and necklaces made with care, plus handpicked crystals and curated sets for everyday style, collecting and meaningful gifting. You will also find candles and considered accessories chosen to complement your home and personal style. Free UK delivery on orders over £30, with international shipping available.

10% off your first order + crystal care tips

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