We only supply natural Smokey Quartz as such the colour does vary the image shows a representation of tumble stones. Also known as Smoky Quartz.

The colour of Smokey Quartz is produced when natural radiation, emitted from the surrounding rock, activates colour centres around aluminium impurities within the crystalline quartz.

• Smokey Quartz is a "stone of no fear" making this an excellent grounding stone.  It gently neutralises negative vibrations whilst protecting against radiation and electromagnetic smog. 
• Smokey Quartz disperses fear, lifts depression and negativity, bringing emotional calmness, relieving stress and anxiety. 
• Smokey Quartz aids concentration and assists in communication difficulties.

Each tumble stone weighs approx 8-15g

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