Black Onyx Sphere 150mm — Large Grounding Crystal house warming gift Agate itself carries a long-standing

Agate itself carries a long-standing reputation as a grounding

no inclusions

so keep it out of direct sun for long stretches

A dry soft brush is the right way to keep it clean

This transitional colour is why blue tiger's eye is sometimes described as the missing link between the two better-known varieties

Black Onyx Sphere 150mm — Large Grounding Crystal house warming gift Agate itself carries a long-standingThis Black Onyx sphere is an extra large polished crystal with a deep black colour and a smooth, powerful presence. At 150mm and roughly 4. 5kg, this piece is genuinely rare in size and makes a strong statement in any crystal collection or home display. So what is black onyx known as? It is a stone of protection, grounding, strength, and emotional stability, often chosen by people who want to create a calmer space, reduce heavy energy, and feel more